209770180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{338339}}^1$

素因数の和:338379

約数の個数: 24

約数和(自身を含む): 454728960

約数和(自身を除く): 244958780

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 338339, 676678, 1353356, 1691695, 3383390, 6766780, 10488509, 20977018, 41954036, 52442545, 104885090, 209770180]

約数ペア:

[(1, 209770180), (2, 104885090), (4, 52442545), (5, 41954036), (10, 20977018), (20, 10488509), (31, 6766780), (62, 3383390), (124, 1691695), (155, 1353356), (310, 676678), (620, 338339)]