20879325

素因数分解:

$3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1307}}^1$

素因数の和:1394

約数の個数: 36

約数和(自身を含む): 37952928

約数和(自身を除く): 17073603

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 213, 225, 355, 639, 1065, 1307, 1775, 3195, 3921, 5325, 6535, 11763, 15975, 19605, 32675, 58815, 92797, 98025, 278391, 294075, 463985, 835173, 1391955, 2319925, 4175865, 6959775, 20879325]

約数ペア:

[(1, 20879325), (3, 6959775), (5, 4175865), (9, 2319925), (15, 1391955), (25, 835173), (45, 463985), (71, 294075), (75, 278391), (213, 98025), (225, 92797), (355, 58815), (639, 32675), (1065, 19605), (1307, 15975), (1775, 11763), (3195, 6535), (3921, 5325)]