20645178621

素因数分解:

$3^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1\times {\mathrm{1453}}^1$

素因数の和:2021

約数の個数: 32

約数和(自身を含む): 28097142528

約数和(自身を除く): 7451963907

約数列:

[1, 3, 97, 157, 291, 311, 471, 933, 1453, 4359, 15229, 30167, 45687, 48827, 90501, 140941, 146481, 228121, 422823, 451883, 684363, 1355649, 4736219, 14208657, 22127737, 43832651, 66383211, 70945631, 131497953, 212836893, 6881726207, 20645178621]

約数ペア:

[(1, 20645178621), (3, 6881726207), (97, 212836893), (157, 131497953), (291, 70945631), (311, 66383211), (471, 43832651), (933, 22127737), (1453, 14208657), (4359, 4736219), (15229, 1355649), (30167, 684363), (45687, 451883), (48827, 422823), (90501, 228121), (140941, 146481)]