20878208

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{12547}}^1$

素因数の和:12574

約数の個数: 32

約数和(自身を含む): 44796360

約数和(自身を除く): 23918152

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 12547, 25094, 50188, 100376, 163111, 200752, 326222, 401504, 652444, 803008, 1304888, 1606016, 2609776, 5219552, 10439104, 20878208]

約数ペア:

[(1, 20878208), (2, 10439104), (4, 5219552), (8, 2609776), (13, 1606016), (16, 1304888), (26, 803008), (32, 652444), (52, 401504), (64, 326222), (104, 200752), (128, 163111), (208, 100376), (416, 50188), (832, 25094), (1664, 12547)]