21209648

素因数分解:

$2^4\times {\mathrm{113}}^1\times {\mathrm{11731}}^1$

素因数の和:11852

約数の個数: 20

約数和(自身を含む): 41460888

約数和(自身を除く): 20251240

約数列:

[1, 2, 4, 8, 16, 113, 226, 452, 904, 1808, 11731, 23462, 46924, 93848, 187696, 1325603, 2651206, 5302412, 10604824, 21209648]

約数ペア:

[(1, 21209648), (2, 10604824), (4, 5302412), (8, 2651206), (16, 1325603), (113, 187696), (226, 93848), (452, 46924), (904, 23462), (1808, 11731)]