20407130975

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{50723}}^1$

素因数の和:50781

約数の個数: 72

約数和(自身を含む): 33461608320

約数和(自身を除く): 13054477345

約数列:

[1, 5, 7, 11, 19, 25, 35, 55, 77, 95, 121, 133, 175, 209, 275, 385, 475, 605, 665, 847, 1045, 1463, 1925, 2299, 3025, 3325, 4235, 5225, 7315, 11495, 16093, 21175, 36575, 50723, 57475, 80465, 253615, 355061, 402325, 557953, 963737, 1268075, 1775305, 2789765, 3905671, 4818685, 6137483, 6746159, 8876525, 10601107, 13948825, 19528355, 24093425, 30687415, 33730795, 42962381, 53005535, 74207749, 97641775, 116612177, 153437075, 168653975, 214811905, 265027675, 371038745, 583060885, 816285239, 1074059525, 1855193725, 2915304425, 4081426195, 20407130975]

約数ペア:

[(1, 20407130975), (5, 4081426195), (7, 2915304425), (11, 1855193725), (19, 1074059525), (25, 816285239), (35, 583060885), (55, 371038745), (77, 265027675), (95, 214811905), (121, 168653975), (133, 153437075), (175, 116612177), (209, 97641775), (275, 74207749), (385, 53005535), (475, 42962381), (605, 33730795), (665, 30687415), (847, 24093425), (1045, 19528355), (1463, 13948825), (1925, 10601107), (2299, 8876525), (3025, 6746159), (3325, 6137483), (4235, 4818685), (5225, 3905671), (7315, 2789765), (11495, 1775305), (16093, 1268075), (21175, 963737), (36575, 557953), (50723, 402325), (57475, 355061), (80465, 253615)]