256749680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2099}}^1$

素因数の和:2262

約数の個数: 80

約数和(自身を含む): 656208000

約数和(自身を除く): 399458320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 139, 176, 220, 278, 440, 556, 695, 880, 1112, 1390, 1529, 2099, 2224, 2780, 3058, 4198, 5560, 6116, 7645, 8396, 10495, 11120, 12232, 15290, 16792, 20990, 23089, 24464, 30580, 33584, 41980, 46178, 61160, 83960, 92356, 115445, 122320, 167920, 184712, 230890, 291761, 369424, 461780, 583522, 923560, 1167044, 1458805, 1847120, 2334088, 2917610, 3209371, 4668176, 5835220, 6418742, 11670440, 12837484, 16046855, 23340880, 25674968, 32093710, 51349936, 64187420, 128374840, 256749680]

約数ペア:

[(1, 256749680), (2, 128374840), (4, 64187420), (5, 51349936), (8, 32093710), (10, 25674968), (11, 23340880), (16, 16046855), (20, 12837484), (22, 11670440), (40, 6418742), (44, 5835220), (55, 4668176), (80, 3209371), (88, 2917610), (110, 2334088), (139, 1847120), (176, 1458805), (220, 1167044), (278, 923560), (440, 583522), (556, 461780), (695, 369424), (880, 291761), (1112, 230890), (1390, 184712), (1529, 167920), (2099, 122320), (2224, 115445), (2780, 92356), (3058, 83960), (4198, 61160), (5560, 46178), (6116, 41980), (7645, 33584), (8396, 30580), (10495, 24464), (11120, 23089), (12232, 20990), (15290, 16792)]