20298915

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4957}}^1$

素因数の和:4988

約数の個数: 48

約数和(自身を含む): 43313088

約数和(自身を除く): 23014173

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 4957, 14871, 24785, 34699, 44613, 64441, 74355, 104097, 173495, 193323, 223065, 312291, 322205, 451087, 520485, 579969, 966615, 1353261, 1561455, 2255435, 2899845, 4059783, 6766305, 20298915]

約数ペア:

[(1, 20298915), (3, 6766305), (5, 4059783), (7, 2899845), (9, 2255435), (13, 1561455), (15, 1353261), (21, 966615), (35, 579969), (39, 520485), (45, 451087), (63, 322205), (65, 312291), (91, 223065), (105, 193323), (117, 173495), (195, 104097), (273, 74355), (315, 64441), (455, 44613), (585, 34699), (819, 24785), (1365, 14871), (4095, 4957)]