68656720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1279}}^1$

素因数の和:1364

約数の個数: 80

約数和(自身を含む): 177131520

約数和(自身を除く): 108474800

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 61, 80, 88, 110, 122, 176, 220, 244, 305, 440, 488, 610, 671, 880, 976, 1220, 1279, 1342, 2440, 2558, 2684, 3355, 4880, 5116, 5368, 6395, 6710, 10232, 10736, 12790, 13420, 14069, 20464, 25580, 26840, 28138, 51160, 53680, 56276, 70345, 78019, 102320, 112552, 140690, 156038, 225104, 281380, 312076, 390095, 562760, 624152, 780190, 858209, 1125520, 1248304, 1560380, 1716418, 3120760, 3432836, 4291045, 6241520, 6865672, 8582090, 13731344, 17164180, 34328360, 68656720]

約数ペア:

[(1, 68656720), (2, 34328360), (4, 17164180), (5, 13731344), (8, 8582090), (10, 6865672), (11, 6241520), (16, 4291045), (20, 3432836), (22, 3120760), (40, 1716418), (44, 1560380), (55, 1248304), (61, 1125520), (80, 858209), (88, 780190), (110, 624152), (122, 562760), (176, 390095), (220, 312076), (244, 281380), (305, 225104), (440, 156038), (488, 140690), (610, 112552), (671, 102320), (880, 78019), (976, 70345), (1220, 56276), (1279, 53680), (1342, 51160), (2440, 28138), (2558, 26840), (2684, 25580), (3355, 20464), (4880, 14069), (5116, 13420), (5368, 12790), (6395, 10736), (6710, 10232)]