80219580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{491}}^1$

素因数の和:899

約数の個数: 96

約数和(自身を含む): 257886720

約数和(自身を除く): 177667140

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 389, 420, 491, 778, 982, 1167, 1473, 1556, 1945, 1964, 2334, 2455, 2723, 2946, 3437, 3890, 4668, 4910, 5446, 5835, 5892, 6874, 7365, 7780, 8169, 9820, 10311, 10892, 11670, 13615, 13748, 14730, 16338, 17185, 20622, 23340, 27230, 29460, 32676, 34370, 40845, 41244, 51555, 54460, 68740, 81690, 103110, 163380, 190999, 206220, 381998, 572997, 763996, 954995, 1145994, 1336993, 1909990, 2291988, 2673986, 2864985, 3819980, 4010979, 5347972, 5729970, 6684965, 8021958, 11459940, 13369930, 16043916, 20054895, 26739860, 40109790, 80219580]

約数ペア:

[(1, 80219580), (2, 40109790), (3, 26739860), (4, 20054895), (5, 16043916), (6, 13369930), (7, 11459940), (10, 8021958), (12, 6684965), (14, 5729970), (15, 5347972), (20, 4010979), (21, 3819980), (28, 2864985), (30, 2673986), (35, 2291988), (42, 1909990), (60, 1336993), (70, 1145994), (84, 954995), (105, 763996), (140, 572997), (210, 381998), (389, 206220), (420, 190999), (491, 163380), (778, 103110), (982, 81690), (1167, 68740), (1473, 54460), (1556, 51555), (1945, 41244), (1964, 40845), (2334, 34370), (2455, 32676), (2723, 29460), (2946, 27230), (3437, 23340), (3890, 20622), (4668, 17185), (4910, 16338), (5446, 14730), (5835, 13748), (5892, 13615), (6874, 11670), (7365, 10892), (7780, 10311), (8169, 9820)]