199641455

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:348

約数の個数: 64

約数和(自身を含む): 296472960

約数和(自身を除く): 96831505

約数列:

[1, 5, 13, 17, 19, 37, 65, 85, 95, 185, 221, 247, 257, 323, 481, 629, 703, 1105, 1235, 1285, 1615, 2405, 3145, 3341, 3515, 4199, 4369, 4883, 8177, 9139, 9509, 11951, 16705, 20995, 21845, 24415, 40885, 45695, 47545, 56797, 59755, 63479, 83011, 123617, 155363, 161653, 180671, 283985, 317395, 415055, 618085, 776815, 808265, 903355, 1079143, 2101489, 2348723, 3071407, 5395715, 10507445, 11743615, 15357035, 39928291, 199641455]

約数ペア:

[(1, 199641455), (5, 39928291), (13, 15357035), (17, 11743615), (19, 10507445), (37, 5395715), (65, 3071407), (85, 2348723), (95, 2101489), (185, 1079143), (221, 903355), (247, 808265), (257, 776815), (323, 618085), (481, 415055), (629, 317395), (703, 283985), (1105, 180671), (1235, 161653), (1285, 155363), (1615, 123617), (2405, 83011), (3145, 63479), (3341, 59755), (3515, 56797), (4199, 47545), (4369, 45695), (4883, 40885), (8177, 24415), (9139, 21845), (9509, 20995), (11951, 16705)]