81089820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{463}}^1$

素因数の和:624

約数の個数: 144

約数和(自身を含む): 283745280

約数和(自身を除く): 202655460

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, 139, 140, 180, 210, 252, 278, 315, 417, 420, 463, 556, 630, 695, 834, 926, 973, 1251, 1260, 1389, 1390, 1668, 1852, 1946, 2085, 2315, 2502, 2778, 2780, 2919, 3241, 3892, 4167, 4170, 4630, 4865, 5004, 5556, 5838, 6255, 6482, 6945, 8334, 8340, 8757, 9260, 9723, 9730, 11676, 12510, 12964, 13890, 14595, 16205, 16668, 17514, 19446, 19460, 20835, 25020, 27780, 29169, 29190, 32410, 35028, 38892, 41670, 43785, 48615, 58338, 58380, 64357, 64820, 83340, 87570, 97230, 116676, 128714, 145845, 175140, 193071, 194460, 257428, 291690, 321785, 386142, 450499, 579213, 583380, 643570, 772284, 900998, 965355, 1158426, 1287140, 1351497, 1801996, 1930710, 2252495, 2316852, 2702994, 2896065, 3861420, 4054491, 4504990, 5405988, 5792130, 6757485, 8108982, 9009980, 11584260, 13514970, 16217964, 20272455, 27029940, 40544910, 81089820]

約数ペア:

[(1, 81089820), (2, 40544910), (3, 27029940), (4, 20272455), (5, 16217964), (6, 13514970), (7, 11584260), (9, 9009980), (10, 8108982), (12, 6757485), (14, 5792130), (15, 5405988), (18, 4504990), (20, 4054491), (21, 3861420), (28, 2896065), (30, 2702994), (35, 2316852), (36, 2252495), (42, 1930710), (45, 1801996), (60, 1351497), (63, 1287140), (70, 1158426), (84, 965355), (90, 900998), (105, 772284), (126, 643570), (139, 583380), (140, 579213), (180, 450499), (210, 386142), (252, 321785), (278, 291690), (315, 257428), (417, 194460), (420, 193071), (463, 175140), (556, 145845), (630, 128714), (695, 116676), (834, 97230), (926, 87570), (973, 83340), (1251, 64820), (1260, 64357), (1389, 58380), (1390, 58338), (1668, 48615), (1852, 43785), (1946, 41670), (2085, 38892), (2315, 35028), (2502, 32410), (2778, 29190), (2780, 29169), (2919, 27780), (3241, 25020), (3892, 20835), (4167, 19460), (4170, 19446), (4630, 17514), (4865, 16668), (5004, 16205), (5556, 14595), (5838, 13890), (6255, 12964), (6482, 12510), (6945, 11676), (8334, 9730), (8340, 9723), (8757, 9260)]