20360220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19961}}^1$

素因数の和:19990

約数の個数: 48

約数和(自身を含む): 60365088

約数和(自身を除く): 40004868

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 19961, 39922, 59883, 79844, 99805, 119766, 199610, 239532, 299415, 339337, 399220, 598830, 678674, 1018011, 1197660, 1357348, 1696685, 2036022, 3393370, 4072044, 5090055, 6786740, 10180110, 20360220]

約数ペア:

[(1, 20360220), (2, 10180110), (3, 6786740), (4, 5090055), (5, 4072044), (6, 3393370), (10, 2036022), (12, 1696685), (15, 1357348), (17, 1197660), (20, 1018011), (30, 678674), (34, 598830), (51, 399220), (60, 339337), (68, 299415), (85, 239532), (102, 199610), (170, 119766), (204, 99805), (255, 79844), (340, 59883), (510, 39922), (1020, 19961)]