98702780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^2\times {\mathrm{89}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 231925680

約数和(自身を除く): 133222900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 89, 110, 142, 178, 220, 284, 355, 356, 445, 710, 781, 890, 979, 1420, 1562, 1780, 1958, 3124, 3905, 3916, 4895, 5041, 6319, 7810, 9790, 10082, 12638, 15620, 19580, 20164, 25205, 25276, 31595, 50410, 55451, 63190, 69509, 100820, 110902, 126380, 139018, 221804, 277255, 278036, 347545, 448649, 554510, 695090, 897298, 1109020, 1390180, 1794596, 2243245, 4486490, 4935139, 8972980, 9870278, 19740556, 24675695, 49351390, 98702780]

約数ペア:

[(1, 98702780), (2, 49351390), (4, 24675695), (5, 19740556), (10, 9870278), (11, 8972980), (20, 4935139), (22, 4486490), (44, 2243245), (55, 1794596), (71, 1390180), (89, 1109020), (110, 897298), (142, 695090), (178, 554510), (220, 448649), (284, 347545), (355, 278036), (356, 277255), (445, 221804), (710, 139018), (781, 126380), (890, 110902), (979, 100820), (1420, 69509), (1562, 63190), (1780, 55451), (1958, 50410), (3124, 31595), (3905, 25276), (3916, 25205), (4895, 20164), (5041, 19580), (6319, 15620), (7810, 12638), (9790, 10082)]