40205420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49031}}^1$

素因数の和:49081

約数の個数: 24

約数和(自身を含む): 86492448

約数和(自身を除く): 46287028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 49031, 98062, 196124, 245155, 490310, 980620, 2010271, 4020542, 8041084, 10051355, 20102710, 40205420]

約数ペア:

[(1, 40205420), (2, 20102710), (4, 10051355), (5, 8041084), (10, 4020542), (20, 2010271), (41, 980620), (82, 490310), (164, 245155), (205, 196124), (410, 98062), (820, 49031)]