18964840

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{16349}}^1$

素因数の和:16389

約数の個数: 32

約数和(自身を含む): 44145000

約数和(自身を除く): 25180160

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 16349, 32698, 65396, 81745, 130792, 163490, 326980, 474121, 653960, 948242, 1896484, 2370605, 3792968, 4741210, 9482420, 18964840]

約数ペア:

[(1, 18964840), (2, 9482420), (4, 4741210), (5, 3792968), (8, 2370605), (10, 1896484), (20, 948242), (29, 653960), (40, 474121), (58, 326980), (116, 163490), (145, 130792), (232, 81745), (290, 65396), (580, 32698), (1160, 16349)]