21404280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1667}}^1$

素因数の和:1788

約数の個数: 64

約数和(自身を含む): 64851840

約数和(自身を除く): 43447560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 107, 120, 214, 321, 428, 535, 642, 856, 1070, 1284, 1605, 1667, 2140, 2568, 3210, 3334, 4280, 5001, 6420, 6668, 8335, 10002, 12840, 13336, 16670, 20004, 25005, 33340, 40008, 50010, 66680, 100020, 178369, 200040, 356738, 535107, 713476, 891845, 1070214, 1426952, 1783690, 2140428, 2675535, 3567380, 4280856, 5351070, 7134760, 10702140, 21404280]

約数ペア:

[(1, 21404280), (2, 10702140), (3, 7134760), (4, 5351070), (5, 4280856), (6, 3567380), (8, 2675535), (10, 2140428), (12, 1783690), (15, 1426952), (20, 1070214), (24, 891845), (30, 713476), (40, 535107), (60, 356738), (107, 200040), (120, 178369), (214, 100020), (321, 66680), (428, 50010), (535, 40008), (642, 33340), (856, 25005), (1070, 20004), (1284, 16670), (1605, 13336), (1667, 12840), (2140, 10002), (2568, 8335), (3210, 6668), (3334, 6420), (4280, 5001)]