201991279

素因数分解:

$7^2\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{641}}^1$

素因数の和:823

約数の個数: 24

約数和(自身を含む): 241520400

約数和(自身を除く): 39529121

約数列:

[1, 7, 49, 59, 109, 413, 641, 763, 2891, 4487, 5341, 6431, 31409, 37819, 45017, 69869, 264733, 315119, 489083, 1853131, 3423581, 4122271, 28855897, 201991279]

約数ペア:

[(1, 201991279), (7, 28855897), (49, 4122271), (59, 3423581), (109, 1853131), (413, 489083), (641, 315119), (763, 264733), (2891, 69869), (4487, 45017), (5341, 37819), (6431, 31409)]