207895420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{253531}}^1$

素因数の和:253581

約数の個数: 24

約数和(自身を含む): 447230448

約数和(自身を除く): 239335028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 253531, 507062, 1014124, 1267655, 2535310, 5070620, 10394771, 20789542, 41579084, 51973855, 103947710, 207895420]

約数ペア:

[(1, 207895420), (2, 103947710), (4, 51973855), (5, 41579084), (10, 20789542), (20, 10394771), (41, 5070620), (82, 2535310), (164, 1267655), (205, 1014124), (410, 507062), (820, 253531)]