20630428

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{157}}^1$

素因数の和:219

約数の個数: 72

約数和(自身を含む): 47195232

約数和(自身を除く): 26564804

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 157, 182, 247, 266, 314, 361, 364, 494, 532, 628, 722, 988, 1099, 1444, 1729, 2041, 2198, 2527, 2983, 3458, 4082, 4396, 4693, 5054, 5966, 6916, 8164, 9386, 10108, 11932, 14287, 18772, 20881, 28574, 32851, 38779, 41762, 56677, 57148, 65702, 77558, 83524, 113354, 131404, 155116, 226708, 271453, 396739, 542906, 736801, 793478, 1085812, 1473602, 1586956, 2947204, 5157607, 10315214, 20630428]

約数ペア:

[(1, 20630428), (2, 10315214), (4, 5157607), (7, 2947204), (13, 1586956), (14, 1473602), (19, 1085812), (26, 793478), (28, 736801), (38, 542906), (52, 396739), (76, 271453), (91, 226708), (133, 155116), (157, 131404), (182, 113354), (247, 83524), (266, 77558), (314, 65702), (361, 57148), (364, 56677), (494, 41762), (532, 38779), (628, 32851), (722, 28574), (988, 20881), (1099, 18772), (1444, 14287), (1729, 11932), (2041, 10108), (2198, 9386), (2527, 8164), (2983, 6916), (3458, 5966), (4082, 5054), (4396, 4693)]