19999312

素因数分解:

$2^4\times {\mathrm{179}}^1\times {\mathrm{6983}}^1$

素因数の和:7170

約数の個数: 20

約数和(自身を含む): 38970720

約数和(自身を除く): 18971408

約数列:

[1, 2, 4, 8, 16, 179, 358, 716, 1432, 2864, 6983, 13966, 27932, 55864, 111728, 1249957, 2499914, 4999828, 9999656, 19999312]

約数ペア:

[(1, 19999312), (2, 9999656), (4, 4999828), (8, 2499914), (16, 1249957), (179, 111728), (358, 55864), (716, 27932), (1432, 13966), (2864, 6983)]