21107520

素因数分解:

$2^6\times 3^3\times 5^1\times 7^1\times {\mathrm{349}}^1$

素因数の和:382

約数の個数: 224

約数和(自身を含む): 85344000

約数和(自身を除く): 64236480

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, 64, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 168, 180, 189, 192, 210, 216, 224, 240, 252, 270, 280, 288, 315, 320, 336, 349, 360, 378, 420, 432, 448, 480, 504, 540, 560, 576, 630, 672, 698, 720, 756, 840, 864, 945, 960, 1008, 1047, 1080, 1120, 1260, 1344, 1396, 1440, 1512, 1680, 1728, 1745, 1890, 2016, 2094, 2160, 2240, 2443, 2520, 2792, 2880, 3024, 3141, 3360, 3490, 3780, 4032, 4188, 4320, 4886, 5040, 5235, 5584, 6048, 6282, 6720, 6980, 7329, 7560, 8376, 8640, 9423, 9772, 10080, 10470, 11168, 12096, 12215, 12564, 13960, 14658, 15120, 15705, 16752, 18846, 19544, 20160, 20940, 21987, 22336, 24430, 25128, 27920, 29316, 30240, 31410, 33504, 36645, 37692, 39088, 41880, 43974, 47115, 48860, 50256, 55840, 58632, 60480, 62820, 65961, 67008, 73290, 75384, 78176, 83760, 87948, 94230, 97720, 100512, 109935, 111680, 117264, 125640, 131922, 146580, 150768, 156352, 167520, 175896, 188460, 195440, 201024, 219870, 234528, 251280, 263844, 293160, 301536, 329805, 335040, 351792, 376920, 390880, 439740, 469056, 502560, 527688, 586320, 603072, 659610, 703584, 753840, 781760, 879480, 1005120, 1055376, 1172640, 1319220, 1407168, 1507680, 1758960, 2110752, 2345280, 2638440, 3015360, 3517920, 4221504, 5276880, 7035840, 10553760, 21107520]

約数ペア:

[(1, 21107520), (2, 10553760), (3, 7035840), (4, 5276880), (5, 4221504), (6, 3517920), (7, 3015360), (8, 2638440), (9, 2345280), (10, 2110752), (12, 1758960), (14, 1507680), (15, 1407168), (16, 1319220), (18, 1172640), (20, 1055376), (21, 1005120), (24, 879480), (27, 781760), (28, 753840), (30, 703584), (32, 659610), (35, 603072), (36, 586320), (40, 527688), (42, 502560), (45, 469056), (48, 439740), (54, 390880), (56, 376920), (60, 351792), (63, 335040), (64, 329805), (70, 301536), (72, 293160), (80, 263844), (84, 251280), (90, 234528), (96, 219870), (105, 201024), (108, 195440), (112, 188460), (120, 175896), (126, 167520), (135, 156352), (140, 150768), (144, 146580), (160, 131922), (168, 125640), (180, 117264), (189, 111680), (192, 109935), (210, 100512), (216, 97720), (224, 94230), (240, 87948), (252, 83760), (270, 78176), (280, 75384), (288, 73290), (315, 67008), (320, 65961), (336, 62820), (349, 60480), (360, 58632), (378, 55840), (420, 50256), (432, 48860), (448, 47115), (480, 43974), (504, 41880), (540, 39088), (560, 37692), (576, 36645), (630, 33504), (672, 31410), (698, 30240), (720, 29316), (756, 27920), (840, 25128), (864, 24430), (945, 22336), (960, 21987), (1008, 20940), (1047, 20160), (1080, 19544), (1120, 18846), (1260, 16752), (1344, 15705), (1396, 15120), (1440, 14658), (1512, 13960), (1680, 12564), (1728, 12215), (1745, 12096), (1890, 11168), (2016, 10470), (2094, 10080), (2160, 9772), (2240, 9423), (2443, 8640), (2520, 8376), (2792, 7560), (2880, 7329), (3024, 6980), (3141, 6720), (3360, 6282), (3490, 6048), (3780, 5584), (4032, 5235), (4188, 5040), (4320, 4886)]