81044460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:644

約数の個数: 144

約数和(自身を含む): 283675392

約数和(自身を除く): 202630932

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 131, 140, 180, 210, 252, 262, 315, 393, 420, 491, 524, 630, 655, 786, 917, 982, 1179, 1260, 1310, 1473, 1572, 1834, 1964, 1965, 2358, 2455, 2620, 2751, 2946, 3437, 3668, 3930, 4419, 4585, 4716, 4910, 5502, 5892, 5895, 6874, 7365, 7860, 8253, 8838, 9170, 9820, 10311, 11004, 11790, 13748, 13755, 14730, 16506, 17185, 17676, 18340, 20622, 22095, 23580, 27510, 29460, 30933, 33012, 34370, 41244, 41265, 44190, 51555, 55020, 61866, 64321, 68740, 82530, 88380, 103110, 123732, 128642, 154665, 165060, 192963, 206220, 257284, 309330, 321605, 385926, 450247, 578889, 618660, 643210, 771852, 900494, 964815, 1157778, 1286420, 1350741, 1800988, 1929630, 2251235, 2315556, 2701482, 2894445, 3859260, 4052223, 4502470, 5402964, 5788890, 6753705, 8104446, 9004940, 11577780, 13507410, 16208892, 20261115, 27014820, 40522230, 81044460]

約数ペア:

[(1, 81044460), (2, 40522230), (3, 27014820), (4, 20261115), (5, 16208892), (6, 13507410), (7, 11577780), (9, 9004940), (10, 8104446), (12, 6753705), (14, 5788890), (15, 5402964), (18, 4502470), (20, 4052223), (21, 3859260), (28, 2894445), (30, 2701482), (35, 2315556), (36, 2251235), (42, 1929630), (45, 1800988), (60, 1350741), (63, 1286420), (70, 1157778), (84, 964815), (90, 900494), (105, 771852), (126, 643210), (131, 618660), (140, 578889), (180, 450247), (210, 385926), (252, 321605), (262, 309330), (315, 257284), (393, 206220), (420, 192963), (491, 165060), (524, 154665), (630, 128642), (655, 123732), (786, 103110), (917, 88380), (982, 82530), (1179, 68740), (1260, 64321), (1310, 61866), (1473, 55020), (1572, 51555), (1834, 44190), (1964, 41265), (1965, 41244), (2358, 34370), (2455, 33012), (2620, 30933), (2751, 29460), (2946, 27510), (3437, 23580), (3668, 22095), (3930, 20622), (4419, 18340), (4585, 17676), (4716, 17185), (4910, 16506), (5502, 14730), (5892, 13755), (5895, 13748), (6874, 11790), (7365, 11004), (7860, 10311), (8253, 9820), (8838, 9170)]