19815380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76213}}^1$

素因数の和:76235

約数の個数: 24

約数和(自身を含む): 44813832

約数和(自身を除く): 24998452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76213, 152426, 304852, 381065, 762130, 990769, 1524260, 1981538, 3963076, 4953845, 9907690, 19815380]

約数ペア:

[(1, 19815380), (2, 9907690), (4, 4953845), (5, 3963076), (10, 1981538), (13, 1524260), (20, 990769), (26, 762130), (52, 381065), (65, 304852), (130, 152426), (260, 76213)]