18737980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15359}}^1$

素因数の和:15429

約数の個数: 24

約数和(自身を含む): 39997440

約数和(自身を除く): 21259460

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15359, 30718, 61436, 76795, 153590, 307180, 936899, 1873798, 3747596, 4684495, 9368990, 18737980]

約数ペア:

[(1, 18737980), (2, 9368990), (4, 4684495), (5, 3747596), (10, 1873798), (20, 936899), (61, 307180), (122, 153590), (244, 76795), (305, 61436), (610, 30718), (1220, 15359)]