21111664

素因数分解:

$2^4\times 7^1\times {\mathrm{233}}^1\times {\mathrm{809}}^1$

素因数の和:1057

約数の個数: 40

約数和(自身を含む): 47005920

約数和(自身を除く): 25894256

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 233, 466, 809, 932, 1618, 1631, 1864, 3236, 3262, 3728, 5663, 6472, 6524, 11326, 12944, 13048, 22652, 26096, 45304, 90608, 188497, 376994, 753988, 1319479, 1507976, 2638958, 3015952, 5277916, 10555832, 21111664]

約数ペア:

[(1, 21111664), (2, 10555832), (4, 5277916), (7, 3015952), (8, 2638958), (14, 1507976), (16, 1319479), (28, 753988), (56, 376994), (112, 188497), (233, 90608), (466, 45304), (809, 26096), (932, 22652), (1618, 13048), (1631, 12944), (1864, 11326), (3236, 6524), (3262, 6472), (3728, 5663)]