21038997

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1013}}^1$

素因数の和:1089

約数の個数: 32

約数和(自身を含む): 34265088

約数和(自身を除く): 13226091

約数列:

[1, 3, 7, 21, 23, 43, 69, 129, 161, 301, 483, 903, 989, 1013, 2967, 3039, 6923, 7091, 20769, 21273, 23299, 43559, 69897, 130677, 163093, 304913, 489279, 914739, 1001857, 3005571, 7012999, 21038997]

約数ペア:

[(1, 21038997), (3, 7012999), (7, 3005571), (21, 1001857), (23, 914739), (43, 489279), (69, 304913), (129, 163093), (161, 130677), (301, 69897), (483, 43559), (903, 23299), (989, 21273), (1013, 20769), (2967, 7091), (3039, 6923)]