201978280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{721351}}^1$

素因数の和:721369

約数の個数: 32

約数和(自身を含む): 519373440

約数和(自身を除く): 317395160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 721351, 1442702, 2885404, 3606755, 5049457, 5770808, 7213510, 10098914, 14427020, 20197828, 25247285, 28854040, 40395656, 50494570, 100989140, 201978280]

約数ペア:

[(1, 201978280), (2, 100989140), (4, 50494570), (5, 40395656), (7, 28854040), (8, 25247285), (10, 20197828), (14, 14427020), (20, 10098914), (28, 7213510), (35, 5770808), (40, 5049457), (56, 3606755), (70, 2885404), (140, 1442702), (280, 721351)]