21319816

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{12281}}^1$

素因数の和:12325

約数の個数: 32

約数和(自身を含む): 47162880

約数和(自身を除く): 25843064

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 1736, 12281, 24562, 49124, 85967, 98248, 171934, 343868, 380711, 687736, 761422, 1522844, 2664977, 3045688, 5329954, 10659908, 21319816]

約数ペア:

[(1, 21319816), (2, 10659908), (4, 5329954), (7, 3045688), (8, 2664977), (14, 1522844), (28, 761422), (31, 687736), (56, 380711), (62, 343868), (124, 171934), (217, 98248), (248, 85967), (434, 49124), (868, 24562), (1736, 12281)]