18747920

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8081}}^1$

素因数の和:8123

約数の個数: 40

約数和(自身を含む): 45097560

約数和(自身を除く): 26349640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8081, 16162, 32324, 40405, 64648, 80810, 129296, 161620, 234349, 323240, 468698, 646480, 937396, 1171745, 1874792, 2343490, 3749584, 4686980, 9373960, 18747920]

約数ペア:

[(1, 18747920), (2, 9373960), (4, 4686980), (5, 3749584), (8, 2343490), (10, 1874792), (16, 1171745), (20, 937396), (29, 646480), (40, 468698), (58, 323240), (80, 234349), (116, 161620), (145, 129296), (232, 80810), (290, 64648), (464, 40405), (580, 32324), (1160, 16162), (2320, 8081)]