20015775

素因数分解:

$3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{2281}}^1$

素因数の和:2313

約数の個数: 48

約数和(自身を含む): 39615520

約数和(自身を除く): 19599745

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 117, 135, 195, 225, 325, 351, 585, 675, 975, 1755, 2281, 2925, 6843, 8775, 11405, 20529, 29653, 34215, 57025, 61587, 88959, 102645, 148265, 171075, 266877, 307935, 444795, 513225, 741325, 800631, 1334385, 1539675, 2223975, 4003155, 6671925, 20015775]

約数ペア:

[(1, 20015775), (3, 6671925), (5, 4003155), (9, 2223975), (13, 1539675), (15, 1334385), (25, 800631), (27, 741325), (39, 513225), (45, 444795), (65, 307935), (75, 266877), (117, 171075), (135, 148265), (195, 102645), (225, 88959), (325, 61587), (351, 57025), (585, 34215), (675, 29653), (975, 20529), (1755, 11405), (2281, 8775), (2925, 6843)]