21206344

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{739}}^1$

素因数の和:973

約数の個数: 32

約数和(自身を含む): 42357600

約数和(自身を除く): 21151256

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 211, 422, 739, 844, 1478, 1688, 2956, 3587, 5912, 7174, 12563, 14348, 25126, 28696, 50252, 100504, 155929, 311858, 623716, 1247432, 2650793, 5301586, 10603172, 21206344]

約数ペア:

[(1, 21206344), (2, 10603172), (4, 5301586), (8, 2650793), (17, 1247432), (34, 623716), (68, 311858), (136, 155929), (211, 100504), (422, 50252), (739, 28696), (844, 25126), (1478, 14348), (1688, 12563), (2956, 7174), (3587, 5912)]