72167225

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:115

約数の個数: 72

約数和(自身を含む): 108921600

約数和(自身を除く): 36754375

約数列:

[1, 5, 13, 19, 25, 29, 31, 65, 95, 145, 155, 169, 247, 325, 377, 403, 475, 551, 589, 725, 775, 845, 899, 1235, 1885, 2015, 2755, 2945, 3211, 4225, 4495, 4901, 5239, 6175, 7163, 7657, 9425, 10075, 11687, 13775, 14725, 16055, 17081, 22475, 24505, 26195, 35815, 38285, 58435, 80275, 85405, 93119, 99541, 122525, 130975, 151931, 179075, 191425, 222053, 292175, 427025, 465595, 497705, 759655, 1110265, 2327975, 2488525, 2886689, 3798275, 5551325, 14433445, 72167225]

約数ペア:

[(1, 72167225), (5, 14433445), (13, 5551325), (19, 3798275), (25, 2886689), (29, 2488525), (31, 2327975), (65, 1110265), (95, 759655), (145, 497705), (155, 465595), (169, 427025), (247, 292175), (325, 222053), (377, 191425), (403, 179075), (475, 151931), (551, 130975), (589, 122525), (725, 99541), (775, 93119), (845, 85405), (899, 80275), (1235, 58435), (1885, 38285), (2015, 35815), (2755, 26195), (2945, 24505), (3211, 22475), (4225, 17081), (4495, 16055), (4901, 14725), (5239, 13775), (6175, 11687), (7163, 10075), (7657, 9425)]