21276060

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27277}}^1$

素因数の和:27302

約数の個数: 48

約数和(自身を含む): 64157856

約数和(自身を除く): 42881796

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27277, 54554, 81831, 109108, 136385, 163662, 272770, 327324, 354601, 409155, 545540, 709202, 818310, 1063803, 1418404, 1636620, 1773005, 2127606, 3546010, 4255212, 5319015, 7092020, 10638030, 21276060]

約数ペア:

[(1, 21276060), (2, 10638030), (3, 7092020), (4, 5319015), (5, 4255212), (6, 3546010), (10, 2127606), (12, 1773005), (13, 1636620), (15, 1418404), (20, 1063803), (26, 818310), (30, 709202), (39, 545540), (52, 409155), (60, 354601), (65, 327324), (78, 272770), (130, 163662), (156, 136385), (195, 109108), (260, 81831), (390, 54554), (780, 27277)]