21403256

素因数分解:

$2^3\times 7^1\times {\mathrm{229}}^1\times {\mathrm{1669}}^1$

素因数の和:1911

約数の個数: 32

約数和(自身を含む): 46092000

約数和(自身を除く): 24688744

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 229, 458, 916, 1603, 1669, 1832, 3206, 3338, 6412, 6676, 11683, 12824, 13352, 23366, 46732, 93464, 382201, 764402, 1528804, 2675407, 3057608, 5350814, 10701628, 21403256]

約数ペア:

[(1, 21403256), (2, 10701628), (4, 5350814), (7, 3057608), (8, 2675407), (14, 1528804), (28, 764402), (56, 382201), (229, 93464), (458, 46732), (916, 23366), (1603, 13352), (1669, 12824), (1832, 11683), (3206, 6676), (3338, 6412)]