21000604370

素因数分解:

$2^1\times 5^1\times {\mathrm{6983}}^1\times {\mathrm{300739}}^1$

素因数の和:307729

約数の個数: 16

約数和(自身を含む): 37806626880

約数和(自身を除く): 16806022510

約数列:

[1, 2, 5, 10, 6983, 13966, 34915, 69830, 300739, 601478, 1503695, 3007390, 2100060437, 4200120874, 10500302185, 21000604370]

約数ペア:

[(1, 21000604370), (2, 10500302185), (5, 4200120874), (10, 2100060437), (6983, 3007390), (13966, 1503695), (34915, 601478), (69830, 300739)]