20118540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25793}}^1$

素因数の和:25818

約数の個数: 48

約数和(自身を含む): 60667488

約数和(自身を除く): 40548948

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25793, 51586, 77379, 103172, 128965, 154758, 257930, 309516, 335309, 386895, 515860, 670618, 773790, 1005927, 1341236, 1547580, 1676545, 2011854, 3353090, 4023708, 5029635, 6706180, 10059270, 20118540]

約数ペア:

[(1, 20118540), (2, 10059270), (3, 6706180), (4, 5029635), (5, 4023708), (6, 3353090), (10, 2011854), (12, 1676545), (13, 1547580), (15, 1341236), (20, 1005927), (26, 773790), (30, 670618), (39, 515860), (52, 386895), (60, 335309), (65, 309516), (78, 257930), (130, 154758), (156, 128965), (195, 103172), (260, 77379), (390, 51586), (780, 25793)]