21851127

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:389

約数の個数: 40

約数和(自身を含む): 35091936

約数和(自身を除く): 13240809

約数列:

[1, 3, 9, 23, 27, 37, 69, 81, 111, 207, 317, 333, 621, 851, 951, 999, 1863, 2553, 2853, 2997, 7291, 7659, 8559, 11729, 21873, 22977, 25677, 35187, 65619, 68931, 105561, 196857, 269767, 316683, 590571, 809301, 950049, 2427903, 7283709, 21851127]

約数ペア:

[(1, 21851127), (3, 7283709), (9, 2427903), (23, 950049), (27, 809301), (37, 590571), (69, 316683), (81, 269767), (111, 196857), (207, 105561), (317, 68931), (333, 65619), (621, 35187), (851, 25677), (951, 22977), (999, 21873), (1863, 11729), (2553, 8559), (2853, 7659), (2997, 7291)]