20685740

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{233}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 45759168

約数和(自身を除く): 25073428

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 193, 230, 233, 386, 460, 466, 772, 932, 965, 1165, 1930, 2330, 3860, 4439, 4660, 5359, 8878, 10718, 17756, 21436, 22195, 26795, 44390, 44969, 53590, 88780, 89938, 107180, 179876, 224845, 449690, 899380, 1034287, 2068574, 4137148, 5171435, 10342870, 20685740]

約数ペア:

[(1, 20685740), (2, 10342870), (4, 5171435), (5, 4137148), (10, 2068574), (20, 1034287), (23, 899380), (46, 449690), (92, 224845), (115, 179876), (193, 107180), (230, 89938), (233, 88780), (386, 53590), (460, 44969), (466, 44390), (772, 26795), (932, 22195), (965, 21436), (1165, 17756), (1930, 10718), (2330, 8878), (3860, 5359), (4439, 4660)]