208978140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{71081}}^1$

素因数の和:71107

約数の個数: 72

約数和(自身を含む): 680681232

約数和(自身を除く): 471703092

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, 71081, 142162, 213243, 284324, 355405, 426486, 497567, 710810, 852972, 995134, 1066215, 1421620, 1492701, 1990268, 2132430, 2487835, 2985402, 3482969, 4264860, 4975670, 5970804, 6965938, 7463505, 9951340, 10448907, 13931876, 14927010, 17414845, 20897814, 29854020, 34829690, 41795628, 52244535, 69659380, 104489070, 208978140]

約数ペア:

[(1, 208978140), (2, 104489070), (3, 69659380), (4, 52244535), (5, 41795628), (6, 34829690), (7, 29854020), (10, 20897814), (12, 17414845), (14, 14927010), (15, 13931876), (20, 10448907), (21, 9951340), (28, 7463505), (30, 6965938), (35, 5970804), (42, 4975670), (49, 4264860), (60, 3482969), (70, 2985402), (84, 2487835), (98, 2132430), (105, 1990268), (140, 1492701), (147, 1421620), (196, 1066215), (210, 995134), (245, 852972), (294, 710810), (420, 497567), (490, 426486), (588, 355405), (735, 284324), (980, 213243), (1470, 142162), (2940, 71081)]