21228328

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1619}}^1$

素因数の和:1785

約数の個数: 32

約数和(自身を含む): 43740000

約数和(自身を除く): 22511672

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 149, 298, 596, 1192, 1619, 1639, 3238, 3278, 6476, 6556, 12952, 13112, 17809, 35618, 71236, 142472, 241231, 482462, 964924, 1929848, 2653541, 5307082, 10614164, 21228328]

約数ペア:

[(1, 21228328), (2, 10614164), (4, 5307082), (8, 2653541), (11, 1929848), (22, 964924), (44, 482462), (88, 241231), (149, 142472), (298, 71236), (596, 35618), (1192, 17809), (1619, 13112), (1639, 12952), (3238, 6556), (3278, 6476)]