20019885

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 33246720

約数和(自身を除く): 13226835

約数列:

[1, 3, 5, 15, 47, 73, 141, 219, 235, 365, 389, 705, 1095, 1167, 1945, 3431, 5835, 10293, 17155, 18283, 28397, 51465, 54849, 85191, 91415, 141985, 274245, 425955, 1334659, 4003977, 6673295, 20019885]

約数ペア:

[(1, 20019885), (3, 6673295), (5, 4003977), (15, 1334659), (47, 425955), (73, 274245), (141, 141985), (219, 91415), (235, 85191), (365, 54849), (389, 51465), (705, 28397), (1095, 18283), (1167, 17155), (1945, 10293), (3431, 5835)]