21129038

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:416

約数の個数: 32

約数和(自身を含む): 37407744

約数和(自身を除く): 16278706

約数列:

[1, 2, 7, 14, 47, 94, 163, 197, 326, 329, 394, 658, 1141, 1379, 2282, 2758, 7661, 9259, 15322, 18518, 32111, 53627, 64222, 64813, 107254, 129626, 224777, 449554, 1509217, 3018434, 10564519, 21129038]

約数ペア:

[(1, 21129038), (2, 10564519), (7, 3018434), (14, 1509217), (47, 449554), (94, 224777), (163, 129626), (197, 107254), (326, 64813), (329, 64222), (394, 53627), (658, 32111), (1141, 18518), (1379, 15322), (2282, 9259), (2758, 7661)]