80781820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{197}}^1$

素因数の和:343

約数の個数: 96

約数和(自身を含む): 203575680

約数和(自身を除く): 122793860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 101, 116, 140, 145, 197, 202, 203, 290, 394, 404, 406, 505, 580, 707, 788, 812, 985, 1010, 1015, 1379, 1414, 1970, 2020, 2030, 2758, 2828, 2929, 3535, 3940, 4060, 5516, 5713, 5858, 6895, 7070, 11426, 11716, 13790, 14140, 14645, 19897, 20503, 22852, 27580, 28565, 29290, 39794, 39991, 41006, 57130, 58580, 79588, 79982, 82012, 99485, 102515, 114260, 139279, 159964, 198970, 199955, 205030, 278558, 397940, 399910, 410060, 557116, 577013, 696395, 799820, 1154026, 1392790, 2308052, 2785580, 2885065, 4039091, 5770130, 8078182, 11540260, 16156364, 20195455, 40390910, 80781820]

約数ペア:

[(1, 80781820), (2, 40390910), (4, 20195455), (5, 16156364), (7, 11540260), (10, 8078182), (14, 5770130), (20, 4039091), (28, 2885065), (29, 2785580), (35, 2308052), (58, 1392790), (70, 1154026), (101, 799820), (116, 696395), (140, 577013), (145, 557116), (197, 410060), (202, 399910), (203, 397940), (290, 278558), (394, 205030), (404, 199955), (406, 198970), (505, 159964), (580, 139279), (707, 114260), (788, 102515), (812, 99485), (985, 82012), (1010, 79982), (1015, 79588), (1379, 58580), (1414, 57130), (1970, 41006), (2020, 39991), (2030, 39794), (2758, 29290), (2828, 28565), (2929, 27580), (3535, 22852), (3940, 20503), (4060, 19897), (5516, 14645), (5713, 14140), (5858, 13790), (6895, 11716), (7070, 11426)]