64290140

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{38729}}^1$

素因数の和:38821

約数の個数: 24

約数和(自身を含む): 136639440

約数和(自身を除く): 72349300

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 38729, 77458, 154916, 193645, 387290, 774580, 3214507, 6429014, 12858028, 16072535, 32145070, 64290140]

約数ペア:

[(1, 64290140), (2, 32145070), (4, 16072535), (5, 12858028), (10, 6429014), (20, 3214507), (83, 774580), (166, 387290), (332, 193645), (415, 154916), (830, 77458), (1660, 38729)]