21000894399

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{281}}^1\times {\mathrm{1709}}^1$

素因数の和:2152

約数の個数: 48

約数和(自身を含む): 31444601760

約数和(自身を除く): 10443707361

約数列:

[1, 3, 9, 43, 113, 129, 281, 339, 387, 843, 1017, 1709, 2529, 4859, 5127, 12083, 14577, 15381, 31753, 36249, 43731, 73487, 95259, 108747, 193117, 220461, 285777, 480229, 579351, 661383, 1365379, 1440687, 1738053, 4096137, 4322061, 8304031, 12288411, 20649847, 24912093, 54265877, 61949541, 74736279, 162797631, 185848623, 488392893, 2333432711, 7000298133, 21000894399]

約数ペア:

[(1, 21000894399), (3, 7000298133), (9, 2333432711), (43, 488392893), (113, 185848623), (129, 162797631), (281, 74736279), (339, 61949541), (387, 54265877), (843, 24912093), (1017, 20649847), (1709, 12288411), (2529, 8304031), (4859, 4322061), (5127, 4096137), (12083, 1738053), (14577, 1440687), (15381, 1365379), (31753, 661383), (36249, 579351), (43731, 480229), (73487, 285777), (95259, 220461), (108747, 193117)]