18711520

素因数分解:

$2^5\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1409}}^1$

素因数の和:1507

約数の個数: 48

約数和(自身を含む): 44770320

約数和(自身を除く): 26058800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 83, 160, 166, 332, 415, 664, 830, 1328, 1409, 1660, 2656, 2818, 3320, 5636, 6640, 7045, 11272, 13280, 14090, 22544, 28180, 45088, 56360, 112720, 116947, 225440, 233894, 467788, 584735, 935576, 1169470, 1871152, 2338940, 3742304, 4677880, 9355760, 18711520]

約数ペア:

[(1, 18711520), (2, 9355760), (4, 4677880), (5, 3742304), (8, 2338940), (10, 1871152), (16, 1169470), (20, 935576), (32, 584735), (40, 467788), (80, 233894), (83, 225440), (160, 116947), (166, 112720), (332, 56360), (415, 45088), (664, 28180), (830, 22544), (1328, 14090), (1409, 13280), (1660, 11272), (2656, 7045), (2818, 6640), (3320, 5636)]