21413140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3557}}^1$

素因数の和:3616

約数の個数: 48

約数和(自身を含む): 52601472

約数和(自身を除く): 31188332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3557, 6020, 7114, 14228, 17785, 24899, 35570, 49798, 71140, 99596, 124495, 152951, 248990, 305902, 497980, 611804, 764755, 1070657, 1529510, 2141314, 3059020, 4282628, 5353285, 10706570, 21413140]

約数ペア:

[(1, 21413140), (2, 10706570), (4, 5353285), (5, 4282628), (7, 3059020), (10, 2141314), (14, 1529510), (20, 1070657), (28, 764755), (35, 611804), (43, 497980), (70, 305902), (86, 248990), (140, 152951), (172, 124495), (215, 99596), (301, 71140), (430, 49798), (602, 35570), (860, 24899), (1204, 17785), (1505, 14228), (3010, 7114), (3557, 6020)]