21641380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{56951}}^1$

素因数の和:56979

約数の個数: 24

約数和(自身を含む): 47839680

約数和(自身を除く): 26198300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 56951, 113902, 227804, 284755, 569510, 1082069, 1139020, 2164138, 4328276, 5410345, 10820690, 21641380]

約数ペア:

[(1, 21641380), (2, 10820690), (4, 5410345), (5, 4328276), (10, 2164138), (19, 1139020), (20, 1082069), (38, 569510), (76, 284755), (95, 227804), (190, 113902), (380, 56951)]