20726940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26573}}^1$

素因数の和:26598

約数の個数: 48

約数和(自身を含む): 62502048

約数和(自身を除く): 41775108

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, 26573, 53146, 79719, 106292, 132865, 159438, 265730, 318876, 345449, 398595, 531460, 690898, 797190, 1036347, 1381796, 1594380, 1727245, 2072694, 3454490, 4145388, 5181735, 6908980, 10363470, 20726940]

約数ペア:

[(1, 20726940), (2, 10363470), (3, 6908980), (4, 5181735), (5, 4145388), (6, 3454490), (10, 2072694), (12, 1727245), (13, 1594380), (15, 1381796), (20, 1036347), (26, 797190), (30, 690898), (39, 531460), (52, 398595), (60, 345449), (65, 318876), (78, 265730), (130, 159438), (156, 132865), (195, 106292), (260, 79719), (390, 53146), (780, 26573)]