81761780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{177743}}^1$

素因数の和:177775

約数の個数: 24

約数和(自身を含む): 179165952

約数和(自身を除く): 97404172

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 177743, 355486, 710972, 888715, 1777430, 3554860, 4088089, 8176178, 16352356, 20440445, 40880890, 81761780]

約数ペア:

[(1, 81761780), (2, 40880890), (4, 20440445), (5, 16352356), (10, 8176178), (20, 4088089), (23, 3554860), (46, 1777430), (92, 888715), (115, 710972), (230, 355486), (460, 177743)]