21087310

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{761}}^1$

素因数の和:948

約数の個数: 32

約数和(自身を含む): 40489632

約数和(自身を除く): 19402322

約数列:

[1, 2, 5, 10, 17, 34, 85, 163, 170, 326, 761, 815, 1522, 1630, 2771, 3805, 5542, 7610, 12937, 13855, 25874, 27710, 64685, 124043, 129370, 248086, 620215, 1240430, 2108731, 4217462, 10543655, 21087310]

約数ペア:

[(1, 21087310), (2, 10543655), (5, 4217462), (10, 2108731), (17, 1240430), (34, 620215), (85, 248086), (163, 129370), (170, 124043), (326, 64685), (761, 27710), (815, 25874), (1522, 13855), (1630, 12937), (2771, 7610), (3805, 5542)]