21497640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{7789}}^1$

素因数の和:7826

約数の個数: 64

約数和(自身を含む): 67305600

約数和(自身を除く): 45807960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 184, 230, 276, 345, 460, 552, 690, 920, 1380, 2760, 7789, 15578, 23367, 31156, 38945, 46734, 62312, 77890, 93468, 116835, 155780, 179147, 186936, 233670, 311560, 358294, 467340, 537441, 716588, 895735, 934680, 1074882, 1433176, 1791470, 2149764, 2687205, 3582940, 4299528, 5374410, 7165880, 10748820, 21497640]

約数ペア:

[(1, 21497640), (2, 10748820), (3, 7165880), (4, 5374410), (5, 4299528), (6, 3582940), (8, 2687205), (10, 2149764), (12, 1791470), (15, 1433176), (20, 1074882), (23, 934680), (24, 895735), (30, 716588), (40, 537441), (46, 467340), (60, 358294), (69, 311560), (92, 233670), (115, 186936), (120, 179147), (138, 155780), (184, 116835), (230, 93468), (276, 77890), (345, 62312), (460, 46734), (552, 38945), (690, 31156), (920, 23367), (1380, 15578), (2760, 7789)]