211478399

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 249412608

約数和(自身を除く): 37934209

約数列:

[1, 11, 23, 61, 71, 193, 253, 671, 781, 1403, 1633, 2123, 4331, 4439, 11773, 13703, 15433, 17963, 47641, 48829, 99613, 129503, 150733, 270779, 315169, 835883, 1095743, 2978569, 3466859, 9194713, 19225309, 211478399]

約数ペア:

[(1, 211478399), (11, 19225309), (23, 9194713), (61, 3466859), (71, 2978569), (193, 1095743), (253, 835883), (671, 315169), (781, 270779), (1403, 150733), (1633, 129503), (2123, 99613), (4331, 48829), (4439, 47641), (11773, 17963), (13703, 15433)]