21601450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{199}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 22145750

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 167, 199, 325, 334, 398, 650, 835, 995, 1670, 1990, 2171, 2587, 4175, 4342, 4975, 5174, 8350, 9950, 10855, 12935, 21710, 25870, 33233, 54275, 64675, 66466, 108550, 129350, 166165, 332330, 432029, 830825, 864058, 1661650, 2160145, 4320290, 10800725, 21601450]

約数ペア:

[(1, 21601450), (2, 10800725), (5, 4320290), (10, 2160145), (13, 1661650), (25, 864058), (26, 830825), (50, 432029), (65, 332330), (130, 166165), (167, 129350), (199, 108550), (325, 66466), (334, 64675), (398, 54275), (650, 33233), (835, 25870), (995, 21710), (1670, 12935), (1990, 10855), (2171, 9950), (2587, 8350), (4175, 5174), (4342, 4975)]