21404630

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{719}}^1$

素因数の和:968

約数の個数: 32

約数和(自身を含む): 41731200

約数和(自身を除く): 20326570

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 229, 458, 719, 1145, 1438, 2290, 2977, 3595, 5954, 7190, 9347, 14885, 18694, 29770, 46735, 93470, 164651, 329302, 823255, 1646510, 2140463, 4280926, 10702315, 21404630]

約数ペア:

[(1, 21404630), (2, 10702315), (5, 4280926), (10, 2140463), (13, 1646510), (26, 823255), (65, 329302), (130, 164651), (229, 93470), (458, 46735), (719, 29770), (1145, 18694), (1438, 14885), (2290, 9347), (2977, 7190), (3595, 5954)]