28202715

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{293}}^1$

素因数の和:361

約数の個数: 64

約数和(自身を含む): 54190080

約数和(自身を除く): 25987365

約数列:

[1, 3, 5, 9, 15, 23, 27, 31, 45, 69, 93, 115, 135, 155, 207, 279, 293, 345, 465, 621, 713, 837, 879, 1035, 1395, 1465, 2139, 2637, 3105, 3565, 4185, 4395, 6417, 6739, 7911, 9083, 10695, 13185, 19251, 20217, 27249, 32085, 33695, 39555, 45415, 60651, 81747, 96255, 101085, 136245, 181953, 208909, 245241, 303255, 408735, 626727, 909765, 1044545, 1226205, 1880181, 3133635, 5640543, 9400905, 28202715]

約数ペア:

[(1, 28202715), (3, 9400905), (5, 5640543), (9, 3133635), (15, 1880181), (23, 1226205), (27, 1044545), (31, 909765), (45, 626727), (69, 408735), (93, 303255), (115, 245241), (135, 208909), (155, 181953), (207, 136245), (279, 101085), (293, 96255), (345, 81747), (465, 60651), (621, 45415), (713, 39555), (837, 33695), (879, 32085), (1035, 27249), (1395, 20217), (1465, 19251), (2139, 13185), (2637, 10695), (3105, 9083), (3565, 7911), (4185, 6739), (4395, 6417)]