18980220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{45191}}^1$

素因数の和:45210

約数の個数: 48

約数和(自身を含む): 60738048

約数和(自身を除く): 41757828

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 45191, 90382, 135573, 180764, 225955, 271146, 316337, 451910, 542292, 632674, 677865, 903820, 949011, 1265348, 1355730, 1581685, 1898022, 2711460, 3163370, 3796044, 4745055, 6326740, 9490110, 18980220]

約数ペア:

[(1, 18980220), (2, 9490110), (3, 6326740), (4, 4745055), (5, 3796044), (6, 3163370), (7, 2711460), (10, 1898022), (12, 1581685), (14, 1355730), (15, 1265348), (20, 949011), (21, 903820), (28, 677865), (30, 632674), (35, 542292), (42, 451910), (60, 316337), (70, 271146), (84, 225955), (105, 180764), (140, 135573), (210, 90382), (420, 45191)]