87797890

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{3989}}^1$

素因数の和:4098

約数の個数: 32

約数和(自身を含む): 165473280

約数和(自身を除く): 77675390

約数列:

[1, 2, 5, 10, 31, 62, 71, 142, 155, 310, 355, 710, 2201, 3989, 4402, 7978, 11005, 19945, 22010, 39890, 123659, 247318, 283219, 566438, 618295, 1236590, 1416095, 2832190, 8779789, 17559578, 43898945, 87797890]

約数ペア:

[(1, 87797890), (2, 43898945), (5, 17559578), (10, 8779789), (31, 2832190), (62, 1416095), (71, 1236590), (142, 618295), (155, 566438), (310, 283219), (355, 247318), (710, 123659), (2201, 39890), (3989, 22010), (4402, 19945), (7978, 11005)]