20952906

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 47779200

約数和(自身を除く): 26826294

約数列:

[1, 2, 3, 6, 13, 26, 29, 39, 58, 59, 78, 87, 118, 157, 174, 177, 314, 354, 377, 471, 754, 767, 942, 1131, 1534, 1711, 2041, 2262, 2301, 3422, 4082, 4553, 4602, 5133, 6123, 9106, 9263, 10266, 12246, 13659, 18526, 22243, 27318, 27789, 44486, 55578, 59189, 66729, 118378, 120419, 133458, 177567, 240838, 268627, 355134, 361257, 537254, 722514, 805881, 1611762, 3492151, 6984302, 10476453, 20952906]

約数ペア:

[(1, 20952906), (2, 10476453), (3, 6984302), (6, 3492151), (13, 1611762), (26, 805881), (29, 722514), (39, 537254), (58, 361257), (59, 355134), (78, 268627), (87, 240838), (118, 177567), (157, 133458), (174, 120419), (177, 118378), (314, 66729), (354, 59189), (377, 55578), (471, 44486), (754, 27789), (767, 27318), (942, 22243), (1131, 18526), (1534, 13659), (1711, 12246), (2041, 10266), (2262, 9263), (2301, 9106), (3422, 6123), (4082, 5133), (4553, 4602)]