18257440

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2153}}^1$

素因数の和:2221

約数の個数: 48

約数和(自身を含む): 43967448

約数和(自身を除く): 25710008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2153, 4240, 4306, 8480, 8612, 10765, 17224, 21530, 34448, 43060, 68896, 86120, 114109, 172240, 228218, 344480, 456436, 570545, 912872, 1141090, 1825744, 2282180, 3651488, 4564360, 9128720, 18257440]

約数ペア:

[(1, 18257440), (2, 9128720), (4, 4564360), (5, 3651488), (8, 2282180), (10, 1825744), (16, 1141090), (20, 912872), (32, 570545), (40, 456436), (53, 344480), (80, 228218), (106, 172240), (160, 114109), (212, 86120), (265, 68896), (424, 43060), (530, 34448), (848, 21530), (1060, 17224), (1696, 10765), (2120, 8612), (2153, 8480), (4240, 4306)]