20513240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2027}}^1$

素因数の和:2072

約数の個数: 64

約数和(自身を含む): 52565760

約数和(自身を除く): 32052520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 220, 230, 253, 440, 460, 506, 920, 1012, 1265, 2024, 2027, 2530, 4054, 5060, 8108, 10120, 10135, 16216, 20270, 22297, 40540, 44594, 46621, 81080, 89188, 93242, 111485, 178376, 186484, 222970, 233105, 372968, 445940, 466210, 512831, 891880, 932420, 1025662, 1864840, 2051324, 2564155, 4102648, 5128310, 10256620, 20513240]

約数ペア:

[(1, 20513240), (2, 10256620), (4, 5128310), (5, 4102648), (8, 2564155), (10, 2051324), (11, 1864840), (20, 1025662), (22, 932420), (23, 891880), (40, 512831), (44, 466210), (46, 445940), (55, 372968), (88, 233105), (92, 222970), (110, 186484), (115, 178376), (184, 111485), (220, 93242), (230, 89188), (253, 81080), (440, 46621), (460, 44594), (506, 40540), (920, 22297), (1012, 20270), (1265, 16216), (2024, 10135), (2027, 10120), (2530, 8108), (4054, 5060)]