21382808

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{571}}^1$

素因数の和:759

約数の個数: 32

約数和(自身を含む): 41733120

約数和(自身を除く): 20350312

約数列:

[1, 2, 4, 8, 31, 62, 124, 151, 248, 302, 571, 604, 1142, 1208, 2284, 4568, 4681, 9362, 17701, 18724, 35402, 37448, 70804, 86221, 141608, 172442, 344884, 689768, 2672851, 5345702, 10691404, 21382808]

約数ペア:

[(1, 21382808), (2, 10691404), (4, 5345702), (8, 2672851), (31, 689768), (62, 344884), (124, 172442), (151, 141608), (248, 86221), (302, 70804), (571, 37448), (604, 35402), (1142, 18724), (1208, 17701), (2284, 9362), (4568, 4681)]