691445840

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{491}}^1\times {\mathrm{607}}^1$

素因数の和:1140

約数の個数: 80

約数和(自身を含む): 1669178880

約数和(自身を除く): 977733040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 491, 580, 607, 982, 1160, 1214, 1964, 2320, 2428, 2455, 3035, 3928, 4856, 4910, 6070, 7856, 9712, 9820, 12140, 14239, 17603, 19640, 24280, 28478, 35206, 39280, 48560, 56956, 70412, 71195, 88015, 113912, 140824, 142390, 176030, 227824, 281648, 284780, 298037, 352060, 569560, 596074, 704120, 1139120, 1192148, 1408240, 1490185, 2384296, 2980370, 4768592, 5960740, 8643073, 11921480, 17286146, 23842960, 34572292, 43215365, 69144584, 86430730, 138289168, 172861460, 345722920, 691445840]

約数ペア:

[(1, 691445840), (2, 345722920), (4, 172861460), (5, 138289168), (8, 86430730), (10, 69144584), (16, 43215365), (20, 34572292), (29, 23842960), (40, 17286146), (58, 11921480), (80, 8643073), (116, 5960740), (145, 4768592), (232, 2980370), (290, 2384296), (464, 1490185), (491, 1408240), (580, 1192148), (607, 1139120), (982, 704120), (1160, 596074), (1214, 569560), (1964, 352060), (2320, 298037), (2428, 284780), (2455, 281648), (3035, 227824), (3928, 176030), (4856, 142390), (4910, 140824), (6070, 113912), (7856, 88015), (9712, 71195), (9820, 70412), (12140, 56956), (14239, 48560), (17603, 39280), (19640, 35206), (24280, 28478)]