19979748

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{17903}}^1$

素因数の和:17944

約数の個数: 36

約数和(自身を含む): 52136448

約数和(自身を除く): 32156700

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 124, 186, 279, 372, 558, 1116, 17903, 35806, 53709, 71612, 107418, 161127, 214836, 322254, 554993, 644508, 1109986, 1664979, 2219972, 3329958, 4994937, 6659916, 9989874, 19979748]

約数ペア:

[(1, 19979748), (2, 9989874), (3, 6659916), (4, 4994937), (6, 3329958), (9, 2219972), (12, 1664979), (18, 1109986), (31, 644508), (36, 554993), (62, 322254), (93, 214836), (124, 161127), (186, 107418), (279, 71612), (372, 53709), (558, 35806), (1116, 17903)]