289181815

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 408403296

約数和(自身を除く): 119221481

約数列:

[1, 5, 13, 17, 41, 65, 85, 169, 205, 221, 491, 533, 697, 845, 1105, 2455, 2665, 2873, 3485, 6383, 6929, 8347, 9061, 14365, 20131, 31915, 34645, 41735, 45305, 82979, 100655, 108511, 117793, 261703, 342227, 414895, 542555, 588965, 1308515, 1410643, 1711135, 3402139, 4448951, 7053215, 17010695, 22244755, 57836363, 289181815]

約数ペア:

[(1, 289181815), (5, 57836363), (13, 22244755), (17, 17010695), (41, 7053215), (65, 4448951), (85, 3402139), (169, 1711135), (205, 1410643), (221, 1308515), (491, 588965), (533, 542555), (697, 414895), (845, 342227), (1105, 261703), (2455, 117793), (2665, 108511), (2873, 100655), (3485, 82979), (6383, 45305), (6929, 41735), (8347, 34645), (9061, 31915), (14365, 20131)]