686140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1$

素因数の和:71

約数の個数: 72

約数和(自身を含む): 1844640

約数和(自身を除く): 1158500

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 29, 35, 52, 58, 65, 70, 91, 116, 130, 140, 145, 169, 182, 203, 260, 290, 338, 364, 377, 406, 455, 580, 676, 754, 812, 845, 910, 1015, 1183, 1508, 1690, 1820, 1885, 2030, 2366, 2639, 3380, 3770, 4060, 4732, 4901, 5278, 5915, 7540, 9802, 10556, 11830, 13195, 19604, 23660, 24505, 26390, 34307, 49010, 52780, 68614, 98020, 137228, 171535, 343070, 686140]

約数ペア:

[(1, 686140), (2, 343070), (4, 171535), (5, 137228), (7, 98020), (10, 68614), (13, 52780), (14, 49010), (20, 34307), (26, 26390), (28, 24505), (29, 23660), (35, 19604), (52, 13195), (58, 11830), (65, 10556), (70, 9802), (91, 7540), (116, 5915), (130, 5278), (140, 4901), (145, 4732), (169, 4060), (182, 3770), (203, 3380), (260, 2639), (290, 2366), (338, 2030), (364, 1885), (377, 1820), (406, 1690), (455, 1508), (580, 1183), (676, 1015), (754, 910), (812, 845)]