18784112720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7574239}}^1$

素因数の和:7574283

約数の個数: 40

約数和(自身を含む): 45081876480

約数和(自身を除く): 26297763760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7574239, 15148478, 30296956, 37871195, 60593912, 75742390, 121187824, 151484780, 234801409, 302969560, 469602818, 605939120, 939205636, 1174007045, 1878411272, 2348014090, 3756822544, 4696028180, 9392056360, 18784112720]

約数ペア:

[(1, 18784112720), (2, 9392056360), (4, 4696028180), (5, 3756822544), (8, 2348014090), (10, 1878411272), (16, 1174007045), (20, 939205636), (31, 605939120), (40, 469602818), (62, 302969560), (80, 234801409), (124, 151484780), (155, 121187824), (248, 75742390), (310, 60593912), (496, 37871195), (620, 30296956), (1240, 15148478), (2480, 7574239)]