20558560

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11681}}^1$

素因数の和:11707

約数の個数: 48

約数和(自身を含む): 52989552

約数和(自身を除く): 32430992

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11681, 23362, 46724, 58405, 93448, 116810, 128491, 186896, 233620, 256982, 373792, 467240, 513964, 642455, 934480, 1027928, 1284910, 1868960, 2055856, 2569820, 4111712, 5139640, 10279280, 20558560]

約数ペア:

[(1, 20558560), (2, 10279280), (4, 5139640), (5, 4111712), (8, 2569820), (10, 2055856), (11, 1868960), (16, 1284910), (20, 1027928), (22, 934480), (32, 642455), (40, 513964), (44, 467240), (55, 373792), (80, 256982), (88, 233620), (110, 186896), (160, 128491), (176, 116810), (220, 93448), (352, 58405), (440, 46724), (880, 23362), (1760, 11681)]