20099420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{887}}^1$

素因数の和:1010

約数の個数: 48

約数和(自身を含む): 46545408

約数和(自身を除く): 26445988

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 103, 110, 206, 220, 412, 515, 887, 1030, 1133, 1774, 2060, 2266, 3548, 4435, 4532, 5665, 8870, 9757, 11330, 17740, 19514, 22660, 39028, 48785, 91361, 97570, 182722, 195140, 365444, 456805, 913610, 1004971, 1827220, 2009942, 4019884, 5024855, 10049710, 20099420]

約数ペア:

[(1, 20099420), (2, 10049710), (4, 5024855), (5, 4019884), (10, 2009942), (11, 1827220), (20, 1004971), (22, 913610), (44, 456805), (55, 365444), (103, 195140), (110, 182722), (206, 97570), (220, 91361), (412, 48785), (515, 39028), (887, 22660), (1030, 19514), (1133, 17740), (1774, 11330), (2060, 9757), (2266, 8870), (3548, 5665), (4435, 4532)]