21915540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1117}}^1$

素因数の和:1241

約数の個数: 72

約数和(自身を含む): 67147080

約数和(自身を除く): 45231540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 1090, 1117, 1308, 1635, 1962, 2180, 2234, 3270, 3351, 3924, 4468, 4905, 5585, 6540, 6702, 9810, 10053, 11170, 13404, 16755, 19620, 20106, 22340, 33510, 40212, 50265, 67020, 100530, 121753, 201060, 243506, 365259, 487012, 608765, 730518, 1095777, 1217530, 1461036, 1826295, 2191554, 2435060, 3652590, 4383108, 5478885, 7305180, 10957770, 21915540]

約数ペア:

[(1, 21915540), (2, 10957770), (3, 7305180), (4, 5478885), (5, 4383108), (6, 3652590), (9, 2435060), (10, 2191554), (12, 1826295), (15, 1461036), (18, 1217530), (20, 1095777), (30, 730518), (36, 608765), (45, 487012), (60, 365259), (90, 243506), (109, 201060), (180, 121753), (218, 100530), (327, 67020), (436, 50265), (545, 40212), (654, 33510), (981, 22340), (1090, 20106), (1117, 19620), (1308, 16755), (1635, 13404), (1962, 11170), (2180, 10053), (2234, 9810), (3270, 6702), (3351, 6540), (3924, 5585), (4468, 4905)]