20051180

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{191}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 23978260

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 181, 191, 290, 362, 382, 580, 724, 764, 905, 955, 1810, 1910, 3620, 3820, 5249, 5539, 10498, 11078, 20996, 22156, 26245, 27695, 34571, 52490, 55390, 69142, 104980, 110780, 138284, 172855, 345710, 691420, 1002559, 2005118, 4010236, 5012795, 10025590, 20051180]

約数ペア:

[(1, 20051180), (2, 10025590), (4, 5012795), (5, 4010236), (10, 2005118), (20, 1002559), (29, 691420), (58, 345710), (116, 172855), (145, 138284), (181, 110780), (191, 104980), (290, 69142), (362, 55390), (382, 52490), (580, 34571), (724, 27695), (764, 26245), (905, 22156), (955, 20996), (1810, 11078), (1910, 10498), (3620, 5539), (3820, 5249)]