217257180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{73897}}^1$

素因数の和:73923

約数の個数: 72

約数和(自身を含む): 707647248

約数和(自身を除く): 490390068

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 73897, 147794, 221691, 295588, 369485, 443382, 517279, 738970, 886764, 1034558, 1108455, 1477940, 1551837, 2069116, 2216910, 2586395, 3103674, 3620953, 4433820, 5172790, 6207348, 7241906, 7759185, 10345580, 10862859, 14483812, 15518370, 18104765, 21725718, 31036740, 36209530, 43451436, 54314295, 72419060, 108628590, 217257180]

約数ペア:

[(1, 217257180), (2, 108628590), (3, 72419060), (4, 54314295), (5, 43451436), (6, 36209530), (7, 31036740), (10, 21725718), (12, 18104765), (14, 15518370), (15, 14483812), (20, 10862859), (21, 10345580), (28, 7759185), (30, 7241906), (35, 6207348), (42, 5172790), (49, 4433820), (60, 3620953), (70, 3103674), (84, 2586395), (98, 2216910), (105, 2069116), (140, 1551837), (147, 1477940), (196, 1108455), (210, 1034558), (245, 886764), (294, 738970), (420, 517279), (490, 443382), (588, 369485), (735, 295588), (980, 221691), (1470, 147794), (2940, 73897)]