280067960

素因数分解:

$2^3\times 5^1\times {\mathrm{1607}}^1\times {\mathrm{4357}}^1$

素因数の和:5975

約数の個数: 32

約数和(自身を含む): 630689760

約数和(自身を除く): 350621800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1607, 3214, 4357, 6428, 8035, 8714, 12856, 16070, 17428, 21785, 32140, 34856, 43570, 64280, 87140, 174280, 7001699, 14003398, 28006796, 35008495, 56013592, 70016990, 140033980, 280067960]

約数ペア:

[(1, 280067960), (2, 140033980), (4, 70016990), (5, 56013592), (8, 35008495), (10, 28006796), (20, 14003398), (40, 7001699), (1607, 174280), (3214, 87140), (4357, 64280), (6428, 43570), (8035, 34856), (8714, 32140), (12856, 21785), (16070, 17428)]