9988220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{547}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 23200128

約数和(自身を除く): 13211908

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 83, 110, 166, 220, 332, 415, 547, 830, 913, 1094, 1660, 1826, 2188, 2735, 3652, 4565, 5470, 6017, 9130, 10940, 12034, 18260, 24068, 30085, 45401, 60170, 90802, 120340, 181604, 227005, 454010, 499411, 908020, 998822, 1997644, 2497055, 4994110, 9988220]

約数ペア:

[(1, 9988220), (2, 4994110), (4, 2497055), (5, 1997644), (10, 998822), (11, 908020), (20, 499411), (22, 454010), (44, 227005), (55, 181604), (83, 120340), (110, 90802), (166, 60170), (220, 45401), (332, 30085), (415, 24068), (547, 18260), (830, 12034), (913, 10940), (1094, 9130), (1660, 6017), (1826, 5470), (2188, 4565), (2735, 3652)]