204883640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{394007}}^1$

素因数の和:394031

約数の個数: 32

約数和(自身を含む): 496450080

約数和(自身を除く): 291566440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 394007, 788014, 1576028, 1970035, 3152056, 3940070, 5122091, 7880140, 10244182, 15760280, 20488364, 25610455, 40976728, 51220910, 102441820, 204883640]

約数ペア:

[(1, 204883640), (2, 102441820), (4, 51220910), (5, 40976728), (8, 25610455), (10, 20488364), (13, 15760280), (20, 10244182), (26, 7880140), (40, 5122091), (52, 3940070), (65, 3152056), (104, 1970035), (130, 1576028), (260, 788014), (520, 394007)]