81343920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{6917}}^1$

素因数の和:6947

約数の個数: 120

約数和(自身を含む): 293378544

約数和(自身を除く): 212034624

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1960, 2352, 2940, 3920, 5880, 6917, 11760, 13834, 20751, 27668, 34585, 41502, 48419, 55336, 69170, 83004, 96838, 103755, 110672, 138340, 145257, 166008, 193676, 207510, 242095, 276680, 290514, 332016, 338933, 387352, 415020, 484190, 553360, 581028, 677866, 726285, 774704, 830040, 968380, 1016799, 1162056, 1355732, 1452570, 1660080, 1694665, 1936760, 2033598, 2324112, 2711464, 2905140, 3389330, 3873520, 4067196, 5083995, 5422928, 5810280, 6778660, 8134392, 10167990, 11620560, 13557320, 16268784, 20335980, 27114640, 40671960, 81343920]

約数ペア:

[(1, 81343920), (2, 40671960), (3, 27114640), (4, 20335980), (5, 16268784), (6, 13557320), (7, 11620560), (8, 10167990), (10, 8134392), (12, 6778660), (14, 5810280), (15, 5422928), (16, 5083995), (20, 4067196), (21, 3873520), (24, 3389330), (28, 2905140), (30, 2711464), (35, 2324112), (40, 2033598), (42, 1936760), (48, 1694665), (49, 1660080), (56, 1452570), (60, 1355732), (70, 1162056), (80, 1016799), (84, 968380), (98, 830040), (105, 774704), (112, 726285), (120, 677866), (140, 581028), (147, 553360), (168, 484190), (196, 415020), (210, 387352), (240, 338933), (245, 332016), (280, 290514), (294, 276680), (336, 242095), (392, 207510), (420, 193676), (490, 166008), (560, 145257), (588, 138340), (735, 110672), (784, 103755), (840, 96838), (980, 83004), (1176, 69170), (1470, 55336), (1680, 48419), (1960, 41502), (2352, 34585), (2940, 27668), (3920, 20751), (5880, 13834), (6917, 11760)]