1387960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{4957}}^1$

素因数の和:4975

約数の個数: 32

約数和(自身を含む): 3569760

約数和(自身を除く): 2181800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 4957, 9914, 19828, 24785, 34699, 39656, 49570, 69398, 99140, 138796, 173495, 198280, 277592, 346990, 693980, 1387960]

約数ペア:

[(1, 1387960), (2, 693980), (4, 346990), (5, 277592), (7, 198280), (8, 173495), (10, 138796), (14, 99140), (20, 69398), (28, 49570), (35, 39656), (40, 34699), (56, 24785), (70, 19828), (140, 9914), (280, 4957)]