21000983997

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{14085167}}^1$

素因数の和:14085248

約数の個数: 16

約数和(自身を含む): 32452227072

約数和(自身を除く): 11451243075

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 14085167, 42255501, 98596169, 295788507, 1000046857, 3000140571, 7000327999, 21000983997]

約数ペア:

[(1, 21000983997), (3, 7000327999), (7, 3000140571), (21, 1000046857), (71, 295788507), (213, 98596169), (497, 42255501), (1491, 14085167)]