31661280

素因数分解:

$2^5\times 3^4\times 5^1\times 7^1\times {\mathrm{349}}^1$

素因数の和:383

約数の個数: 240

約数和(自身を含む): 128066400

約数和(自身を除く): 96405120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 162, 168, 180, 189, 210, 216, 224, 240, 252, 270, 280, 288, 315, 324, 336, 349, 360, 378, 405, 420, 432, 480, 504, 540, 560, 567, 630, 648, 672, 698, 720, 756, 810, 840, 864, 945, 1008, 1047, 1080, 1120, 1134, 1260, 1296, 1396, 1440, 1512, 1620, 1680, 1745, 1890, 2016, 2094, 2160, 2268, 2443, 2520, 2592, 2792, 2835, 3024, 3141, 3240, 3360, 3490, 3780, 4188, 4320, 4536, 4886, 5040, 5235, 5584, 5670, 6048, 6282, 6480, 6980, 7329, 7560, 8376, 9072, 9423, 9772, 10080, 10470, 11168, 11340, 12215, 12564, 12960, 13960, 14658, 15120, 15705, 16752, 18144, 18846, 19544, 20940, 21987, 22680, 24430, 25128, 27920, 28269, 29316, 30240, 31410, 33504, 36645, 37692, 39088, 41880, 43974, 45360, 47115, 48860, 50256, 55840, 56538, 58632, 62820, 65961, 73290, 75384, 78176, 83760, 87948, 90720, 94230, 97720, 100512, 109935, 113076, 117264, 125640, 131922, 141345, 146580, 150768, 167520, 175896, 188460, 195440, 197883, 219870, 226152, 234528, 251280, 263844, 282690, 293160, 301536, 329805, 351792, 376920, 390880, 395766, 439740, 452304, 502560, 527688, 565380, 586320, 659610, 703584, 753840, 791532, 879480, 904608, 989415, 1055376, 1130760, 1172640, 1319220, 1507680, 1583064, 1758960, 1978830, 2110752, 2261520, 2638440, 3166128, 3517920, 3957660, 4523040, 5276880, 6332256, 7915320, 10553760, 15830640, 31661280]

約数ペア:

[(1, 31661280), (2, 15830640), (3, 10553760), (4, 7915320), (5, 6332256), (6, 5276880), (7, 4523040), (8, 3957660), (9, 3517920), (10, 3166128), (12, 2638440), (14, 2261520), (15, 2110752), (16, 1978830), (18, 1758960), (20, 1583064), (21, 1507680), (24, 1319220), (27, 1172640), (28, 1130760), (30, 1055376), (32, 989415), (35, 904608), (36, 879480), (40, 791532), (42, 753840), (45, 703584), (48, 659610), (54, 586320), (56, 565380), (60, 527688), (63, 502560), (70, 452304), (72, 439740), (80, 395766), (81, 390880), (84, 376920), (90, 351792), (96, 329805), (105, 301536), (108, 293160), (112, 282690), (120, 263844), (126, 251280), (135, 234528), (140, 226152), (144, 219870), (160, 197883), (162, 195440), (168, 188460), (180, 175896), (189, 167520), (210, 150768), (216, 146580), (224, 141345), (240, 131922), (252, 125640), (270, 117264), (280, 113076), (288, 109935), (315, 100512), (324, 97720), (336, 94230), (349, 90720), (360, 87948), (378, 83760), (405, 78176), (420, 75384), (432, 73290), (480, 65961), (504, 62820), (540, 58632), (560, 56538), (567, 55840), (630, 50256), (648, 48860), (672, 47115), (698, 45360), (720, 43974), (756, 41880), (810, 39088), (840, 37692), (864, 36645), (945, 33504), (1008, 31410), (1047, 30240), (1080, 29316), (1120, 28269), (1134, 27920), (1260, 25128), (1296, 24430), (1396, 22680), (1440, 21987), (1512, 20940), (1620, 19544), (1680, 18846), (1745, 18144), (1890, 16752), (2016, 15705), (2094, 15120), (2160, 14658), (2268, 13960), (2443, 12960), (2520, 12564), (2592, 12215), (2792, 11340), (2835, 11168), (3024, 10470), (3141, 10080), (3240, 9772), (3360, 9423), (3490, 9072), (3780, 8376), (4188, 7560), (4320, 7329), (4536, 6980), (4886, 6480), (5040, 6282), (5235, 6048), (5584, 5670)]