21640560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{2437}}^1$

素因数の和:2490

約数の個数: 80

約数和(自身を含む): 68927136

約数和(自身を除く): 47286576

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 37, 40, 48, 60, 74, 80, 111, 120, 148, 185, 222, 240, 296, 370, 444, 555, 592, 740, 888, 1110, 1480, 1776, 2220, 2437, 2960, 4440, 4874, 7311, 8880, 9748, 12185, 14622, 19496, 24370, 29244, 36555, 38992, 48740, 58488, 73110, 90169, 97480, 116976, 146220, 180338, 194960, 270507, 292440, 360676, 450845, 541014, 584880, 721352, 901690, 1082028, 1352535, 1442704, 1803380, 2164056, 2705070, 3606760, 4328112, 5410140, 7213520, 10820280, 21640560]

約数ペア:

[(1, 21640560), (2, 10820280), (3, 7213520), (4, 5410140), (5, 4328112), (6, 3606760), (8, 2705070), (10, 2164056), (12, 1803380), (15, 1442704), (16, 1352535), (20, 1082028), (24, 901690), (30, 721352), (37, 584880), (40, 541014), (48, 450845), (60, 360676), (74, 292440), (80, 270507), (111, 194960), (120, 180338), (148, 146220), (185, 116976), (222, 97480), (240, 90169), (296, 73110), (370, 58488), (444, 48740), (555, 38992), (592, 36555), (740, 29244), (888, 24370), (1110, 19496), (1480, 14622), (1776, 12185), (2220, 9748), (2437, 8880), (2960, 7311), (4440, 4874)]