204521180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{1973}}^1$

素因数の和:2126

約数の個数: 48

約数和(自身を含む): 441733824

約数和(自身を除く): 237212644

約数列:

[1, 2, 4, 5, 10, 20, 71, 73, 142, 146, 284, 292, 355, 365, 710, 730, 1420, 1460, 1973, 3946, 5183, 7892, 9865, 10366, 19730, 20732, 25915, 39460, 51830, 103660, 140083, 144029, 280166, 288058, 560332, 576116, 700415, 720145, 1400830, 1440290, 2801660, 2880580, 10226059, 20452118, 40904236, 51130295, 102260590, 204521180]

約数ペア:

[(1, 204521180), (2, 102260590), (4, 51130295), (5, 40904236), (10, 20452118), (20, 10226059), (71, 2880580), (73, 2801660), (142, 1440290), (146, 1400830), (284, 720145), (292, 700415), (355, 576116), (365, 560332), (710, 288058), (730, 280166), (1420, 144029), (1460, 140083), (1973, 103660), (3946, 51830), (5183, 39460), (7892, 25915), (9865, 20732), (10366, 19730)]