21719988

素因数分解:

$2^2\times 3^4\times {\mathrm{43}}^1\times {\mathrm{1559}}^1$

素因数の和:1618

約数の個数: 60

約数和(自身を含む): 58138080

約数和(自身を除く): 36418092

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 43, 54, 81, 86, 108, 129, 162, 172, 258, 324, 387, 516, 774, 1161, 1548, 1559, 2322, 3118, 3483, 4644, 4677, 6236, 6966, 9354, 13932, 14031, 18708, 28062, 42093, 56124, 67037, 84186, 126279, 134074, 168372, 201111, 252558, 268148, 402222, 505116, 603333, 804444, 1206666, 1809999, 2413332, 3619998, 5429997, 7239996, 10859994, 21719988]

約数ペア:

[(1, 21719988), (2, 10859994), (3, 7239996), (4, 5429997), (6, 3619998), (9, 2413332), (12, 1809999), (18, 1206666), (27, 804444), (36, 603333), (43, 505116), (54, 402222), (81, 268148), (86, 252558), (108, 201111), (129, 168372), (162, 134074), (172, 126279), (258, 84186), (324, 67037), (387, 56124), (516, 42093), (774, 28062), (1161, 18708), (1548, 14031), (1559, 13932), (2322, 9354), (3118, 6966), (3483, 6236), (4644, 4677)]