21971508

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1109}}^1$

素因数の和:1256

約数の個数: 48

約数和(自身を含む): 55695360

約数和(自身を除く): 33723852

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 127, 156, 254, 381, 508, 762, 1109, 1524, 1651, 2218, 3302, 3327, 4436, 4953, 6604, 6654, 9906, 13308, 14417, 19812, 28834, 43251, 57668, 86502, 140843, 173004, 281686, 422529, 563372, 845058, 1690116, 1830959, 3661918, 5492877, 7323836, 10985754, 21971508]

約数ペア:

[(1, 21971508), (2, 10985754), (3, 7323836), (4, 5492877), (6, 3661918), (12, 1830959), (13, 1690116), (26, 845058), (39, 563372), (52, 422529), (78, 281686), (127, 173004), (156, 140843), (254, 86502), (381, 57668), (508, 43251), (762, 28834), (1109, 19812), (1524, 14417), (1651, 13308), (2218, 9906), (3302, 6654), (3327, 6604), (4436, 4953)]