20999316

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{593}}^1$

素因数の和:840

約数の個数: 48

約数和(自身を含む): 53089344

約数和(自身を除く): 32090028

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 227, 454, 593, 681, 908, 1186, 1362, 1779, 2372, 2724, 2951, 3558, 5902, 7116, 7709, 8853, 11804, 15418, 17706, 23127, 30836, 35412, 46254, 92508, 134611, 269222, 403833, 538444, 807666, 1615332, 1749943, 3499886, 5249829, 6999772, 10499658, 20999316]

約数ペア:

[(1, 20999316), (2, 10499658), (3, 6999772), (4, 5249829), (6, 3499886), (12, 1749943), (13, 1615332), (26, 807666), (39, 538444), (52, 403833), (78, 269222), (156, 134611), (227, 92508), (454, 46254), (593, 35412), (681, 30836), (908, 23127), (1186, 17706), (1362, 15418), (1779, 11804), (2372, 8853), (2724, 7709), (2951, 7116), (3558, 5902)]