205220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 446208

約数和(自身を除く): 240988

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 331, 620, 662, 1324, 1655, 3310, 6620, 10261, 20522, 41044, 51305, 102610, 205220]

約数ペア:

[(1, 205220), (2, 102610), (4, 51305), (5, 41044), (10, 20522), (20, 10261), (31, 6620), (62, 3310), (124, 1655), (155, 1324), (310, 662), (331, 620)]