219399560

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{50321}}^1$

素因数の和:50441

約数の個数: 32

約数和(自身を含む): 498187800

約数和(自身を除く): 278788240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 50321, 100642, 201284, 251605, 402568, 503210, 1006420, 2012840, 5484989, 10969978, 21939956, 27424945, 43879912, 54849890, 109699780, 219399560]

約数ペア:

[(1, 219399560), (2, 109699780), (4, 54849890), (5, 43879912), (8, 27424945), (10, 21939956), (20, 10969978), (40, 5484989), (109, 2012840), (218, 1006420), (436, 503210), (545, 402568), (872, 251605), (1090, 201284), (2180, 100642), (4360, 50321)]