20028580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:229

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 30774620

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 47, 52, 55, 65, 94, 110, 130, 143, 149, 188, 220, 235, 260, 286, 298, 470, 517, 572, 596, 611, 715, 745, 940, 1034, 1222, 1430, 1490, 1639, 1937, 2068, 2444, 2585, 2860, 2980, 3055, 3278, 3874, 5170, 6110, 6556, 6721, 7003, 7748, 8195, 9685, 10340, 12220, 13442, 14006, 16390, 19370, 21307, 26884, 28012, 32780, 33605, 35015, 38740, 42614, 67210, 70030, 77033, 85228, 91039, 106535, 134420, 140060, 154066, 182078, 213070, 308132, 364156, 385165, 426140, 455195, 770330, 910390, 1001429, 1540660, 1820780, 2002858, 4005716, 5007145, 10014290, 20028580]

約数ペア:

[(1, 20028580), (2, 10014290), (4, 5007145), (5, 4005716), (10, 2002858), (11, 1820780), (13, 1540660), (20, 1001429), (22, 910390), (26, 770330), (44, 455195), (47, 426140), (52, 385165), (55, 364156), (65, 308132), (94, 213070), (110, 182078), (130, 154066), (143, 140060), (149, 134420), (188, 106535), (220, 91039), (235, 85228), (260, 77033), (286, 70030), (298, 67210), (470, 42614), (517, 38740), (572, 35015), (596, 33605), (611, 32780), (715, 28012), (745, 26884), (940, 21307), (1034, 19370), (1222, 16390), (1430, 14006), (1490, 13442), (1639, 12220), (1937, 10340), (2068, 9685), (2444, 8195), (2585, 7748), (2860, 7003), (2980, 6721), (3055, 6556), (3278, 6110), (3874, 5170)]