204546740

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{283}}^1\times {\mathrm{509}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 437996160

約数和(自身を除く): 233449420

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 283, 284, 355, 509, 566, 710, 1018, 1132, 1415, 1420, 2036, 2545, 2830, 5090, 5660, 10180, 20093, 36139, 40186, 72278, 80372, 100465, 144047, 144556, 180695, 200930, 288094, 361390, 401860, 576188, 720235, 722780, 1440470, 2880940, 10227337, 20454674, 40909348, 51136685, 102273370, 204546740]

約数ペア:

[(1, 204546740), (2, 102273370), (4, 51136685), (5, 40909348), (10, 20454674), (20, 10227337), (71, 2880940), (142, 1440470), (283, 722780), (284, 720235), (355, 576188), (509, 401860), (566, 361390), (710, 288094), (1018, 200930), (1132, 180695), (1415, 144556), (1420, 144047), (2036, 100465), (2545, 80372), (2830, 72278), (5090, 40186), (5660, 36139), (10180, 20093)]