20444655

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:628

約数の個数: 64

約数和(自身を含む): 42172416

約数和(自身を除く): 21727761

約数列:

[1, 3, 5, 7, 11, 15, 21, 31, 33, 35, 55, 77, 93, 105, 155, 165, 217, 231, 341, 385, 465, 571, 651, 1023, 1085, 1155, 1705, 1713, 2387, 2855, 3255, 3997, 5115, 6281, 7161, 8565, 11935, 11991, 17701, 18843, 19985, 31405, 35805, 43967, 53103, 59955, 88505, 94215, 123907, 131901, 194711, 219835, 265515, 371721, 584133, 619535, 659505, 973555, 1362977, 1858605, 2920665, 4088931, 6814885, 20444655]

約数ペア:

[(1, 20444655), (3, 6814885), (5, 4088931), (7, 2920665), (11, 1858605), (15, 1362977), (21, 973555), (31, 659505), (33, 619535), (35, 584133), (55, 371721), (77, 265515), (93, 219835), (105, 194711), (155, 131901), (165, 123907), (217, 94215), (231, 88505), (341, 59955), (385, 53103), (465, 43967), (571, 35805), (651, 31405), (1023, 19985), (1085, 18843), (1155, 17701), (1705, 11991), (1713, 11935), (2387, 8565), (2855, 7161), (3255, 6281), (3997, 5115)]