20937620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{5009}}^1$

素因数の和:5048

約数の個数: 48

約数和(自身を含む): 50500800

約数和(自身を除く): 29563180

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 5009, 10018, 20036, 25045, 50090, 55099, 95171, 100180, 110198, 190342, 220396, 275495, 380684, 475855, 550990, 951710, 1046881, 1101980, 1903420, 2093762, 4187524, 5234405, 10468810, 20937620]

約数ペア:

[(1, 20937620), (2, 10468810), (4, 5234405), (5, 4187524), (10, 2093762), (11, 1903420), (19, 1101980), (20, 1046881), (22, 951710), (38, 550990), (44, 475855), (55, 380684), (76, 275495), (95, 220396), (110, 190342), (190, 110198), (209, 100180), (220, 95171), (380, 55099), (418, 50090), (836, 25045), (1045, 20036), (2090, 10018), (4180, 5009)]