251566289

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{331}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 304536960

約数和(自身を除く): 52970671

約数列:

[1, 13, 17, 19, 181, 221, 247, 323, 331, 2353, 3077, 3439, 4199, 4303, 5627, 6289, 40001, 44707, 58463, 59911, 73151, 81757, 106913, 760019, 778843, 1018487, 1138309, 1389869, 13240331, 14798017, 19351253, 251566289]

約数ペア:

[(1, 251566289), (13, 19351253), (17, 14798017), (19, 13240331), (181, 1389869), (221, 1138309), (247, 1018487), (323, 778843), (331, 760019), (2353, 106913), (3077, 81757), (3439, 73151), (4199, 59911), (4303, 58463), (5627, 44707), (6289, 40001)]