20219914

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^2$

素因数の和:167

約数の個数: 48

約数和(自身を含む): 38132640

約数和(自身を除く): 17912726

約数列:

[1, 2, 11, 13, 19, 22, 26, 38, 61, 122, 143, 209, 247, 286, 418, 494, 671, 793, 1159, 1342, 1586, 2318, 2717, 3721, 5434, 7442, 8723, 12749, 15067, 17446, 25498, 30134, 40931, 48373, 70699, 81862, 96746, 141398, 165737, 331474, 532103, 777689, 919087, 1064206, 1555378, 1838174, 10109957, 20219914]

約数ペア:

[(1, 20219914), (2, 10109957), (11, 1838174), (13, 1555378), (19, 1064206), (22, 919087), (26, 777689), (38, 532103), (61, 331474), (122, 165737), (143, 141398), (209, 96746), (247, 81862), (286, 70699), (418, 48373), (494, 40931), (671, 30134), (793, 25498), (1159, 17446), (1342, 15067), (1586, 12749), (2318, 8723), (2717, 7442), (3721, 5434)]