28454680

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 67573440

約数和(自身を除く): 39118760

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 157, 184, 197, 230, 314, 394, 460, 628, 785, 788, 920, 985, 1256, 1570, 1576, 1970, 3140, 3611, 3940, 4531, 6280, 7222, 7880, 9062, 14444, 18055, 18124, 22655, 28888, 30929, 36110, 36248, 45310, 61858, 72220, 90620, 123716, 144440, 154645, 181240, 247432, 309290, 618580, 711367, 1237160, 1422734, 2845468, 3556835, 5690936, 7113670, 14227340, 28454680]

約数ペア:

[(1, 28454680), (2, 14227340), (4, 7113670), (5, 5690936), (8, 3556835), (10, 2845468), (20, 1422734), (23, 1237160), (40, 711367), (46, 618580), (92, 309290), (115, 247432), (157, 181240), (184, 154645), (197, 144440), (230, 123716), (314, 90620), (394, 72220), (460, 61858), (628, 45310), (785, 36248), (788, 36110), (920, 30929), (985, 28888), (1256, 22655), (1570, 18124), (1576, 18055), (1970, 14444), (3140, 9062), (3611, 7880), (3940, 7222), (4531, 6280)]