20681370

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:236

約数の個数: 96

約数和(自身を含む): 57238272

約数和(自身を除く): 36556902

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 45, 46, 69, 90, 97, 103, 115, 138, 194, 206, 207, 230, 291, 309, 345, 414, 485, 515, 582, 618, 690, 873, 927, 970, 1030, 1035, 1455, 1545, 1746, 1854, 2070, 2231, 2369, 2910, 3090, 4365, 4462, 4635, 4738, 6693, 7107, 8730, 9270, 9991, 11155, 11845, 13386, 14214, 19982, 20079, 21321, 22310, 23690, 29973, 33465, 35535, 40158, 42642, 49955, 59946, 66930, 71070, 89919, 99910, 100395, 106605, 149865, 179838, 200790, 213210, 229793, 299730, 449595, 459586, 689379, 899190, 1148965, 1378758, 2068137, 2297930, 3446895, 4136274, 6893790, 10340685, 20681370]

約数ペア:

[(1, 20681370), (2, 10340685), (3, 6893790), (5, 4136274), (6, 3446895), (9, 2297930), (10, 2068137), (15, 1378758), (18, 1148965), (23, 899190), (30, 689379), (45, 459586), (46, 449595), (69, 299730), (90, 229793), (97, 213210), (103, 200790), (115, 179838), (138, 149865), (194, 106605), (206, 100395), (207, 99910), (230, 89919), (291, 71070), (309, 66930), (345, 59946), (414, 49955), (485, 42642), (515, 40158), (582, 35535), (618, 33465), (690, 29973), (873, 23690), (927, 22310), (970, 21321), (1030, 20079), (1035, 19982), (1455, 14214), (1545, 13386), (1746, 11845), (1854, 11155), (2070, 9991), (2231, 9270), (2369, 8730), (2910, 7107), (3090, 6693), (4365, 4738), (4462, 4635)]