18580140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{947}}^1$

素因数の和:1071

約数の個数: 72

約数和(自身を含む): 56936880

約数和(自身を除く): 38356740

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, 947, 981, 1090, 1308, 1635, 1894, 1962, 2180, 2841, 3270, 3788, 3924, 4735, 4905, 5682, 6540, 8523, 9470, 9810, 11364, 14205, 17046, 18940, 19620, 28410, 34092, 42615, 56820, 85230, 103223, 170460, 206446, 309669, 412892, 516115, 619338, 929007, 1032230, 1238676, 1548345, 1858014, 2064460, 3096690, 3716028, 4645035, 6193380, 9290070, 18580140]

約数ペア:

[(1, 18580140), (2, 9290070), (3, 6193380), (4, 4645035), (5, 3716028), (6, 3096690), (9, 2064460), (10, 1858014), (12, 1548345), (15, 1238676), (18, 1032230), (20, 929007), (30, 619338), (36, 516115), (45, 412892), (60, 309669), (90, 206446), (109, 170460), (180, 103223), (218, 85230), (327, 56820), (436, 42615), (545, 34092), (654, 28410), (947, 19620), (981, 18940), (1090, 17046), (1308, 14205), (1635, 11364), (1894, 9810), (1962, 9470), (2180, 8523), (2841, 6540), (3270, 5682), (3788, 4905), (3924, 4735)]