21318360

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{619}}^1$

素因数の和:681

約数の個数: 128

約数和(自身を含む): 74995200

約数和(自身を除く): 53676840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 41, 42, 56, 60, 70, 82, 84, 105, 120, 123, 140, 164, 168, 205, 210, 246, 280, 287, 328, 410, 420, 492, 574, 615, 619, 820, 840, 861, 984, 1148, 1230, 1238, 1435, 1640, 1722, 1857, 2296, 2460, 2476, 2870, 3095, 3444, 3714, 4305, 4333, 4920, 4952, 5740, 6190, 6888, 7428, 8610, 8666, 9285, 11480, 12380, 12999, 14856, 17220, 17332, 18570, 21665, 24760, 25379, 25998, 34440, 34664, 37140, 43330, 50758, 51996, 64995, 74280, 76137, 86660, 101516, 103992, 126895, 129990, 152274, 173320, 177653, 203032, 253790, 259980, 304548, 355306, 380685, 507580, 519960, 532959, 609096, 710612, 761370, 888265, 1015160, 1065918, 1421224, 1522740, 1776530, 2131836, 2664795, 3045480, 3553060, 4263672, 5329590, 7106120, 10659180, 21318360]

約数ペア:

[(1, 21318360), (2, 10659180), (3, 7106120), (4, 5329590), (5, 4263672), (6, 3553060), (7, 3045480), (8, 2664795), (10, 2131836), (12, 1776530), (14, 1522740), (15, 1421224), (20, 1065918), (21, 1015160), (24, 888265), (28, 761370), (30, 710612), (35, 609096), (40, 532959), (41, 519960), (42, 507580), (56, 380685), (60, 355306), (70, 304548), (82, 259980), (84, 253790), (105, 203032), (120, 177653), (123, 173320), (140, 152274), (164, 129990), (168, 126895), (205, 103992), (210, 101516), (246, 86660), (280, 76137), (287, 74280), (328, 64995), (410, 51996), (420, 50758), (492, 43330), (574, 37140), (615, 34664), (619, 34440), (820, 25998), (840, 25379), (861, 24760), (984, 21665), (1148, 18570), (1230, 17332), (1238, 17220), (1435, 14856), (1640, 12999), (1722, 12380), (1857, 11480), (2296, 9285), (2460, 8666), (2476, 8610), (2870, 7428), (3095, 6888), (3444, 6190), (3714, 5740), (4305, 4952), (4333, 4920)]