28026775

素因数分解:

$5^2\times 7^2\times {\mathrm{137}}^1\times {\mathrm{167}}^1$

素因数の和:328

約数の個数: 36

約数和(自身を含む): 40966128

約数和(自身を除く): 12939353

約数列:

[1, 5, 7, 25, 35, 49, 137, 167, 175, 245, 685, 835, 959, 1169, 1225, 3425, 4175, 4795, 5845, 6713, 8183, 22879, 23975, 29225, 33565, 40915, 114395, 160153, 167825, 204575, 571975, 800765, 1121071, 4003825, 5605355, 28026775]

約数ペア:

[(1, 28026775), (5, 5605355), (7, 4003825), (25, 1121071), (35, 800765), (49, 571975), (137, 204575), (167, 167825), (175, 160153), (245, 114395), (685, 40915), (835, 33565), (959, 29225), (1169, 23975), (1225, 22879), (3425, 8183), (4175, 6713), (4795, 5845)]