280212440

素因数分解:

$2^3\times 5^1\times {\mathrm{1091}}^1\times {\mathrm{6421}}^1$

素因数の和:7523

約数の個数: 32

約数和(自身を含む): 631154160

約数和(自身を除く): 350941720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1091, 2182, 4364, 5455, 6421, 8728, 10910, 12842, 21820, 25684, 32105, 43640, 51368, 64210, 128420, 256840, 7005311, 14010622, 28021244, 35026555, 56042488, 70053110, 140106220, 280212440]

約数ペア:

[(1, 280212440), (2, 140106220), (4, 70053110), (5, 56042488), (8, 35026555), (10, 28021244), (20, 14010622), (40, 7005311), (1091, 256840), (2182, 128420), (4364, 64210), (5455, 51368), (6421, 43640), (8728, 32105), (10910, 25684), (12842, 21820)]