25980201

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:111

約数の個数: 72

約数和(自身を含む): 45676800

約数和(自身を除く): 19696599

約数列:

[1, 3, 9, 13, 19, 29, 31, 39, 57, 87, 93, 117, 169, 171, 247, 261, 279, 377, 403, 507, 551, 589, 741, 899, 1131, 1209, 1521, 1653, 1767, 2223, 2697, 3211, 3393, 3627, 4901, 4959, 5239, 5301, 7163, 7657, 8091, 9633, 11687, 14703, 15717, 17081, 21489, 22971, 28899, 35061, 44109, 47151, 51243, 64467, 68913, 93119, 99541, 105183, 151931, 153729, 222053, 279357, 298623, 455793, 666159, 838071, 895869, 1367379, 1998477, 2886689, 8660067, 25980201]

約数ペア:

[(1, 25980201), (3, 8660067), (9, 2886689), (13, 1998477), (19, 1367379), (29, 895869), (31, 838071), (39, 666159), (57, 455793), (87, 298623), (93, 279357), (117, 222053), (169, 153729), (171, 151931), (247, 105183), (261, 99541), (279, 93119), (377, 68913), (403, 64467), (507, 51243), (551, 47151), (589, 44109), (741, 35061), (899, 28899), (1131, 22971), (1209, 21489), (1521, 17081), (1653, 15717), (1767, 14703), (2223, 11687), (2697, 9633), (3211, 8091), (3393, 7657), (3627, 7163), (4901, 5301), (4959, 5239)]