21491310

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1471}}^1$

素因数の和:1968

約数の個数: 32

約数和(自身を含む): 51720192

約数和(自身を除く): 30228882

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 487, 974, 1461, 1471, 2435, 2922, 2942, 4413, 4870, 7305, 7355, 8826, 14610, 14710, 22065, 44130, 716377, 1432754, 2149131, 3581885, 4298262, 7163770, 10745655, 21491310]

約数ペア:

[(1, 21491310), (2, 10745655), (3, 7163770), (5, 4298262), (6, 3581885), (10, 2149131), (15, 1432754), (30, 716377), (487, 44130), (974, 22065), (1461, 14710), (1471, 14610), (2435, 8826), (2922, 7355), (2942, 7305), (4413, 4870)]