63897140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{389}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 138378240

約数和(自身を除く): 74481100

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 191, 215, 382, 389, 430, 764, 778, 860, 955, 1556, 1910, 1945, 3820, 3890, 7780, 8213, 16426, 16727, 32852, 33454, 41065, 66908, 74299, 82130, 83635, 148598, 164260, 167270, 297196, 334540, 371495, 742990, 1485980, 3194857, 6389714, 12779428, 15974285, 31948570, 63897140]

約数ペア:

[(1, 63897140), (2, 31948570), (4, 15974285), (5, 12779428), (10, 6389714), (20, 3194857), (43, 1485980), (86, 742990), (172, 371495), (191, 334540), (215, 297196), (382, 167270), (389, 164260), (430, 148598), (764, 83635), (778, 82130), (860, 74299), (955, 66908), (1556, 41065), (1910, 33454), (1945, 32852), (3820, 16727), (3890, 16426), (7780, 8213)]