205430180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{331339}}^1$

素因数の和:331379

約数の個数: 24

約数和(自身を含む): 445320960

約数和(自身を除く): 239890780

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 331339, 662678, 1325356, 1656695, 3313390, 6626780, 10271509, 20543018, 41086036, 51357545, 102715090, 205430180]

約数ペア:

[(1, 205430180), (2, 102715090), (4, 51357545), (5, 41086036), (10, 20543018), (20, 10271509), (31, 6626780), (62, 3313390), (124, 1656695), (155, 1325356), (310, 662678), (620, 331339)]