20608665

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2549}}^1$

素因数の和:2582

約数の個数: 48

約数和(自身を含む): 41860800

約数和(自身を除く): 21252135

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 385, 539, 735, 1155, 1617, 2549, 2695, 7647, 8085, 12745, 17843, 28039, 38235, 53529, 84117, 89215, 124901, 140195, 196273, 267645, 374703, 420585, 588819, 624505, 981365, 1373911, 1873515, 2944095, 4121733, 6869555, 20608665]

約数ペア:

[(1, 20608665), (3, 6869555), (5, 4121733), (7, 2944095), (11, 1873515), (15, 1373911), (21, 981365), (33, 624505), (35, 588819), (49, 420585), (55, 374703), (77, 267645), (105, 196273), (147, 140195), (165, 124901), (231, 89215), (245, 84117), (385, 53529), (539, 38235), (735, 28039), (1155, 17843), (1617, 12745), (2549, 8085), (2695, 7647)]