20709180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1117}}^1$

素因数の和:1235

約数の個数: 72

約数和(自身を含む): 63484512

約数和(自身を除く): 42775332

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 103, 180, 206, 309, 412, 515, 618, 927, 1030, 1117, 1236, 1545, 1854, 2060, 2234, 3090, 3351, 3708, 4468, 4635, 5585, 6180, 6702, 9270, 10053, 11170, 13404, 16755, 18540, 20106, 22340, 33510, 40212, 50265, 67020, 100530, 115051, 201060, 230102, 345153, 460204, 575255, 690306, 1035459, 1150510, 1380612, 1725765, 2070918, 2301020, 3451530, 4141836, 5177295, 6903060, 10354590, 20709180]

約数ペア:

[(1, 20709180), (2, 10354590), (3, 6903060), (4, 5177295), (5, 4141836), (6, 3451530), (9, 2301020), (10, 2070918), (12, 1725765), (15, 1380612), (18, 1150510), (20, 1035459), (30, 690306), (36, 575255), (45, 460204), (60, 345153), (90, 230102), (103, 201060), (180, 115051), (206, 100530), (309, 67020), (412, 50265), (515, 40212), (618, 33510), (927, 22340), (1030, 20106), (1117, 18540), (1236, 16755), (1545, 13404), (1854, 11170), (2060, 10053), (2234, 9270), (3090, 6702), (3351, 6180), (3708, 5585), (4468, 4635)]