399821520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{719}}^1$

素因数の和:1073

約数の個数: 160

約数和(自身を含む): 1422766080

約数和(自身を除く): 1022944560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 331, 336, 420, 560, 662, 719, 840, 993, 1324, 1438, 1655, 1680, 1986, 2157, 2317, 2648, 2876, 3310, 3595, 3972, 4314, 4634, 4965, 5033, 5296, 5752, 6620, 6951, 7190, 7944, 8628, 9268, 9930, 10066, 10785, 11504, 11585, 13240, 13902, 14380, 15099, 15888, 17256, 18536, 19860, 20132, 21570, 23170, 25165, 26480, 27804, 28760, 30198, 34512, 34755, 37072, 39720, 40264, 43140, 46340, 50330, 55608, 57520, 60396, 69510, 75495, 79440, 80528, 86280, 92680, 100660, 111216, 120792, 139020, 150990, 172560, 185360, 201320, 237989, 241584, 278040, 301980, 402640, 475978, 556080, 603960, 713967, 951956, 1189945, 1207920, 1427934, 1665923, 1903912, 2379890, 2855868, 3331846, 3569835, 3807824, 4759780, 4997769, 5711736, 6663692, 7139670, 8329615, 9519560, 9995538, 11423472, 13327384, 14279340, 16659230, 19039120, 19991076, 24988845, 26654768, 28558680, 33318460, 39982152, 49977690, 57117360, 66636920, 79964304, 99955380, 133273840, 199910760, 399821520]

約数ペア:

[(1, 399821520), (2, 199910760), (3, 133273840), (4, 99955380), (5, 79964304), (6, 66636920), (7, 57117360), (8, 49977690), (10, 39982152), (12, 33318460), (14, 28558680), (15, 26654768), (16, 24988845), (20, 19991076), (21, 19039120), (24, 16659230), (28, 14279340), (30, 13327384), (35, 11423472), (40, 9995538), (42, 9519560), (48, 8329615), (56, 7139670), (60, 6663692), (70, 5711736), (80, 4997769), (84, 4759780), (105, 3807824), (112, 3569835), (120, 3331846), (140, 2855868), (168, 2379890), (210, 1903912), (240, 1665923), (280, 1427934), (331, 1207920), (336, 1189945), (420, 951956), (560, 713967), (662, 603960), (719, 556080), (840, 475978), (993, 402640), (1324, 301980), (1438, 278040), (1655, 241584), (1680, 237989), (1986, 201320), (2157, 185360), (2317, 172560), (2648, 150990), (2876, 139020), (3310, 120792), (3595, 111216), (3972, 100660), (4314, 92680), (4634, 86280), (4965, 80528), (5033, 79440), (5296, 75495), (5752, 69510), (6620, 60396), (6951, 57520), (7190, 55608), (7944, 50330), (8628, 46340), (9268, 43140), (9930, 40264), (10066, 39720), (10785, 37072), (11504, 34755), (11585, 34512), (13240, 30198), (13902, 28760), (14380, 27804), (15099, 26480), (15888, 25165), (17256, 23170), (18536, 21570), (19860, 20132)]