40045420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28201}}^1$

素因数の和:28281

約数の個数: 24

約数和(自身を含む): 85282848

約数和(自身を除く): 45237428

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 28201, 56402, 112804, 141005, 282010, 564020, 2002271, 4004542, 8009084, 10011355, 20022710, 40045420]

約数ペア:

[(1, 40045420), (2, 20022710), (4, 10011355), (5, 8009084), (10, 4004542), (20, 2002271), (71, 564020), (142, 282010), (284, 141005), (355, 112804), (710, 56402), (1420, 28201)]