28766980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{571}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 66306240

約数和(自身を除く): 37539260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 229, 458, 571, 916, 1142, 1145, 2284, 2290, 2519, 2855, 4580, 5038, 5710, 6281, 10076, 11420, 12562, 12595, 25124, 25190, 31405, 50380, 62810, 125620, 130759, 261518, 523036, 653795, 1307590, 1438349, 2615180, 2876698, 5753396, 7191745, 14383490, 28766980]

約数ペア:

[(1, 28766980), (2, 14383490), (4, 7191745), (5, 5753396), (10, 2876698), (11, 2615180), (20, 1438349), (22, 1307590), (44, 653795), (55, 523036), (110, 261518), (220, 130759), (229, 125620), (458, 62810), (571, 50380), (916, 31405), (1142, 25190), (1145, 25124), (2284, 12595), (2290, 12562), (2519, 11420), (2855, 10076), (4580, 6281), (5038, 5710)]