21104680

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4931}}^1$

素因数の和:5049

約数の個数: 32

約数和(自身を含む): 47939040

約数和(自身を除く): 26834360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4931, 9862, 19724, 24655, 39448, 49310, 98620, 197240, 527617, 1055234, 2110468, 2638085, 4220936, 5276170, 10552340, 21104680]

約数ペア:

[(1, 21104680), (2, 10552340), (4, 5276170), (5, 4220936), (8, 2638085), (10, 2110468), (20, 1055234), (40, 527617), (107, 197240), (214, 98620), (428, 49310), (535, 39448), (856, 24655), (1070, 19724), (2140, 9862), (4280, 4931)]