18901240

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{8009}}^1$

素因数の和:8079

約数の個数: 32

約数和(自身を含む): 43254000

約数和(自身を除く): 24352760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 8009, 16018, 32036, 40045, 64072, 80090, 160180, 320360, 472531, 945062, 1890124, 2362655, 3780248, 4725310, 9450620, 18901240]

約数ペア:

[(1, 18901240), (2, 9450620), (4, 4725310), (5, 3780248), (8, 2362655), (10, 1890124), (20, 945062), (40, 472531), (59, 320360), (118, 160180), (236, 80090), (295, 64072), (472, 40045), (590, 32036), (1180, 16018), (2360, 8009)]