20131130440

素因数分解:

$2^3\times 5^1\times {\mathrm{15923}}^1\times {\mathrm{31607}}^1$

素因数の和:47541

約数の個数: 32

約数和(自身を含む): 45299321280

約数和(自身を除く): 25168190840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 15923, 31607, 31846, 63214, 63692, 79615, 126428, 127384, 158035, 159230, 252856, 316070, 318460, 632140, 636920, 1264280, 503278261, 1006556522, 2013113044, 2516391305, 4026226088, 5032782610, 10065565220, 20131130440]

約数ペア:

[(1, 20131130440), (2, 10065565220), (4, 5032782610), (5, 4026226088), (8, 2516391305), (10, 2013113044), (20, 1006556522), (40, 503278261), (15923, 1264280), (31607, 636920), (31846, 632140), (63214, 318460), (63692, 316070), (79615, 252856), (126428, 159230), (127384, 158035)]