20009660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4787}}^1$

素因数の和:4826

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 28253380

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4787, 9574, 19148, 23935, 47870, 52657, 90953, 95740, 105314, 181906, 210628, 263285, 363812, 454765, 526570, 909530, 1000483, 1053140, 1819060, 2000966, 4001932, 5002415, 10004830, 20009660]

約数ペア:

[(1, 20009660), (2, 10004830), (4, 5002415), (5, 4001932), (10, 2000966), (11, 1819060), (19, 1053140), (20, 1000483), (22, 909530), (38, 526570), (44, 454765), (55, 363812), (76, 263285), (95, 210628), (110, 181906), (190, 105314), (209, 95740), (220, 90953), (380, 52657), (418, 47870), (836, 23935), (1045, 19148), (2090, 9574), (4180, 4787)]