20455556

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:125

約数の個数: 96

約数和(自身を含む): 45722880

約数和(自身を除く): 25267324

約数列:

[1, 2, 4, 11, 17, 22, 23, 29, 34, 41, 44, 46, 58, 68, 82, 92, 116, 164, 187, 253, 319, 374, 391, 451, 493, 506, 638, 667, 697, 748, 782, 902, 943, 986, 1012, 1189, 1276, 1334, 1394, 1564, 1804, 1886, 1972, 2378, 2668, 2788, 3772, 4301, 4756, 5423, 7337, 7667, 8602, 10373, 10846, 11339, 13079, 14674, 15334, 16031, 17204, 20213, 20746, 21692, 22678, 26158, 27347, 29348, 30668, 32062, 40426, 41492, 45356, 52316, 54694, 64124, 80852, 109388, 124729, 176341, 222343, 249458, 300817, 352682, 444686, 464899, 498916, 601634, 705364, 889372, 929798, 1203268, 1859596, 5113889, 10227778, 20455556]

約数ペア:

[(1, 20455556), (2, 10227778), (4, 5113889), (11, 1859596), (17, 1203268), (22, 929798), (23, 889372), (29, 705364), (34, 601634), (41, 498916), (44, 464899), (46, 444686), (58, 352682), (68, 300817), (82, 249458), (92, 222343), (116, 176341), (164, 124729), (187, 109388), (253, 80852), (319, 64124), (374, 54694), (391, 52316), (451, 45356), (493, 41492), (506, 40426), (638, 32062), (667, 30668), (697, 29348), (748, 27347), (782, 26158), (902, 22678), (943, 21692), (986, 20746), (1012, 20213), (1189, 17204), (1276, 16031), (1334, 15334), (1394, 14674), (1564, 13079), (1804, 11339), (1886, 10846), (1972, 10373), (2378, 8602), (2668, 7667), (2788, 7337), (3772, 5423), (4301, 4756)]