18666468

素因数分解:

$2^2\times 3^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 49008960

約数和(自身を除く): 30342492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 67, 71, 109, 134, 142, 201, 213, 218, 268, 284, 327, 402, 426, 436, 603, 639, 654, 804, 852, 981, 1206, 1278, 1308, 1962, 2412, 2556, 3924, 4757, 7303, 7739, 9514, 14271, 14606, 15478, 19028, 21909, 23217, 28542, 29212, 30956, 42813, 43818, 46434, 57084, 65727, 69651, 85626, 87636, 92868, 131454, 139302, 171252, 262908, 278604, 518513, 1037026, 1555539, 2074052, 3111078, 4666617, 6222156, 9333234, 18666468]

約数ペア:

[(1, 18666468), (2, 9333234), (3, 6222156), (4, 4666617), (6, 3111078), (9, 2074052), (12, 1555539), (18, 1037026), (36, 518513), (67, 278604), (71, 262908), (109, 171252), (134, 139302), (142, 131454), (201, 92868), (213, 87636), (218, 85626), (268, 69651), (284, 65727), (327, 57084), (402, 46434), (426, 43818), (436, 42813), (603, 30956), (639, 29212), (654, 28542), (804, 23217), (852, 21909), (981, 19028), (1206, 15478), (1278, 14606), (1308, 14271), (1962, 9514), (2412, 7739), (2556, 7303), (3924, 4757)]