18214520

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4421}}^1$

素因数の和:4535

約数の個数: 32

約数和(自身を含む): 41389920

約数和(自身を除く): 23175400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4421, 8842, 17684, 22105, 35368, 44210, 88420, 176840, 455363, 910726, 1821452, 2276815, 3642904, 4553630, 9107260, 18214520]

約数ペア:

[(1, 18214520), (2, 9107260), (4, 4553630), (5, 3642904), (8, 2276815), (10, 1821452), (20, 910726), (40, 455363), (103, 176840), (206, 88420), (412, 44210), (515, 35368), (824, 22105), (1030, 17684), (2060, 8842), (4120, 4421)]