18218541

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{347}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 27929088

約数和(自身を除く): 9710547

約数列:

[1, 3, 11, 33, 37, 43, 111, 129, 347, 407, 473, 1041, 1221, 1419, 1591, 3817, 4773, 11451, 12839, 14921, 17501, 38517, 44763, 52503, 141229, 164131, 423687, 492393, 552077, 1656231, 6072847, 18218541]

約数ペア:

[(1, 18218541), (3, 6072847), (11, 1656231), (33, 552077), (37, 492393), (43, 423687), (111, 164131), (129, 141229), (347, 52503), (407, 44763), (473, 38517), (1041, 17501), (1221, 14921), (1419, 12839), (1591, 11451), (3817, 4773)]