21584728

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4021}}^1$

素因数の和:4099

約数の個数: 32

約数和(自身を含む): 44885520

約数和(自身を除く): 23300792

約数列:

[1, 2, 4, 8, 11, 22, 44, 61, 88, 122, 244, 488, 671, 1342, 2684, 4021, 5368, 8042, 16084, 32168, 44231, 88462, 176924, 245281, 353848, 490562, 981124, 1962248, 2698091, 5396182, 10792364, 21584728]

約数ペア:

[(1, 21584728), (2, 10792364), (4, 5396182), (8, 2698091), (11, 1962248), (22, 981124), (44, 490562), (61, 353848), (88, 245281), (122, 176924), (244, 88462), (488, 44231), (671, 32168), (1342, 16084), (2684, 8042), (4021, 5368)]