217760120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{1163}}^1$

素因数の和:1356

約数の個数: 64

約数和(自身を含む): 509552640

約数和(自身を除く): 291792520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 151, 155, 248, 302, 310, 604, 620, 755, 1163, 1208, 1240, 1510, 2326, 3020, 4652, 4681, 5815, 6040, 9304, 9362, 11630, 18724, 23260, 23405, 36053, 37448, 46520, 46810, 72106, 93620, 144212, 175613, 180265, 187240, 288424, 351226, 360530, 702452, 721060, 878065, 1404904, 1442120, 1756130, 3512260, 5444003, 7024520, 10888006, 21776012, 27220015, 43552024, 54440030, 108880060, 217760120]

約数ペア:

[(1, 217760120), (2, 108880060), (4, 54440030), (5, 43552024), (8, 27220015), (10, 21776012), (20, 10888006), (31, 7024520), (40, 5444003), (62, 3512260), (124, 1756130), (151, 1442120), (155, 1404904), (248, 878065), (302, 721060), (310, 702452), (604, 360530), (620, 351226), (755, 288424), (1163, 187240), (1208, 180265), (1240, 175613), (1510, 144212), (2326, 93620), (3020, 72106), (4652, 46810), (4681, 46520), (5815, 37448), (6040, 36053), (9304, 23405), (9362, 23260), (11630, 18724)]