199936040

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{1223}}^1$

素因数の和:1362

約数の個数: 64

約数和(自身を含む): 464434560

約数和(自身を除く): 264498520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 67, 122, 134, 244, 268, 305, 335, 488, 536, 610, 670, 1220, 1223, 1340, 2440, 2446, 2680, 4087, 4892, 6115, 8174, 9784, 12230, 16348, 20435, 24460, 32696, 40870, 48920, 74603, 81740, 81941, 149206, 163480, 163882, 298412, 327764, 373015, 409705, 596824, 655528, 746030, 819410, 1492060, 1638820, 2984120, 3277640, 4998401, 9996802, 19993604, 24992005, 39987208, 49984010, 99968020, 199936040]

約数ペア:

[(1, 199936040), (2, 99968020), (4, 49984010), (5, 39987208), (8, 24992005), (10, 19993604), (20, 9996802), (40, 4998401), (61, 3277640), (67, 2984120), (122, 1638820), (134, 1492060), (244, 819410), (268, 746030), (305, 655528), (335, 596824), (488, 409705), (536, 373015), (610, 327764), (670, 298412), (1220, 163882), (1223, 163480), (1340, 149206), (2440, 81941), (2446, 81740), (2680, 74603), (4087, 48920), (4892, 40870), (6115, 32696), (8174, 24460), (9784, 20435), (12230, 16348)]