20762875

素因数分解:

$5^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{389}}^1$

素因数の和:472

約数の個数: 32

約数和(自身を含む): 30176640

約数和(自身を除く): 9413765

約数列:

[1, 5, 7, 25, 35, 61, 125, 175, 305, 389, 427, 875, 1525, 1945, 2135, 2723, 7625, 9725, 10675, 13615, 23729, 48625, 53375, 68075, 118645, 166103, 340375, 593225, 830515, 2966125, 4152575, 20762875]

約数ペア:

[(1, 20762875), (5, 4152575), (7, 2966125), (25, 830515), (35, 593225), (61, 340375), (125, 166103), (175, 118645), (305, 68075), (389, 53375), (427, 48625), (875, 23729), (1525, 13615), (1945, 10675), (2135, 9725), (2723, 7625)]