21840238

素因数分解:

$2^1\times 7^1\times {\mathrm{653}}^1\times {\mathrm{2389}}^1$

素因数の和:3051

約数の個数: 16

約数和(自身を含む): 37513440

約数和(自身を除く): 15673202

約数列:

[1, 2, 7, 14, 653, 1306, 2389, 4571, 4778, 9142, 16723, 33446, 1560017, 3120034, 10920119, 21840238]

約数ペア:

[(1, 21840238), (2, 10920119), (7, 3120034), (14, 1560017), (653, 33446), (1306, 16723), (2389, 9142), (4571, 4778)]