278825420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{340031}}^1$

素因数の和:340081

約数の個数: 24

約数和(自身を含む): 599816448

約数和(自身を除く): 320991028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 340031, 680062, 1360124, 1700155, 3400310, 6800620, 13941271, 27882542, 55765084, 69706355, 139412710, 278825420]

約数ペア:

[(1, 278825420), (2, 139412710), (4, 69706355), (5, 55765084), (10, 27882542), (20, 13941271), (41, 6800620), (82, 3400310), (164, 1700155), (205, 1360124), (410, 680062), (820, 340031)]