21281858

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{541}}^1$

素因数の和:662

約数の個数: 32

約数和(自身を含む): 36877680

約数和(自身を除く): 15595822

約数列:

[1, 2, 13, 17, 26, 34, 89, 178, 221, 442, 541, 1082, 1157, 1513, 2314, 3026, 7033, 9197, 14066, 18394, 19669, 39338, 48149, 96298, 119561, 239122, 625937, 818533, 1251874, 1637066, 10640929, 21281858]

約数ペア:

[(1, 21281858), (2, 10640929), (13, 1637066), (17, 1251874), (26, 818533), (34, 625937), (89, 239122), (178, 119561), (221, 96298), (442, 48149), (541, 39338), (1082, 19669), (1157, 18394), (1513, 14066), (2314, 9197), (3026, 7033)]