20687664

素因数分解:

$2^4\times 3^1\times {\mathrm{31}}^1\times {\mathrm{13903}}^1$

素因数の和:13945

約数の個数: 40

約数和(自身を含む): 55171072

約数和(自身を除く): 34483408

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 31, 48, 62, 93, 124, 186, 248, 372, 496, 744, 1488, 13903, 27806, 41709, 55612, 83418, 111224, 166836, 222448, 333672, 430993, 667344, 861986, 1292979, 1723972, 2585958, 3447944, 5171916, 6895888, 10343832, 20687664]

約数ペア:

[(1, 20687664), (2, 10343832), (3, 6895888), (4, 5171916), (6, 3447944), (8, 2585958), (12, 1723972), (16, 1292979), (24, 861986), (31, 667344), (48, 430993), (62, 333672), (93, 222448), (124, 166836), (186, 111224), (248, 83418), (372, 55612), (496, 41709), (744, 27806), (1488, 13903)]