18503990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1223}}^1$

素因数の和:1336

約数の個数: 32

約数和(自身を含む): 35691840

約数和(自身を除く): 17187850

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 170, 178, 445, 890, 1223, 1513, 2446, 3026, 6115, 7565, 12230, 15130, 20791, 41582, 103955, 108847, 207910, 217694, 544235, 1088470, 1850399, 3700798, 9251995, 18503990]

約数ペア:

[(1, 18503990), (2, 9251995), (5, 3700798), (10, 1850399), (17, 1088470), (34, 544235), (85, 217694), (89, 207910), (170, 108847), (178, 103955), (445, 41582), (890, 20791), (1223, 15130), (1513, 12230), (2446, 7565), (3026, 6115)]