18120280

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{739}}^1$

素因数の和:1363

約数の個数: 32

約数和(自身を含む): 40892400

約数和(自身を除く): 22772120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 739, 1226, 1478, 2452, 2956, 3065, 3695, 4904, 5912, 6130, 7390, 12260, 14780, 24520, 29560, 453007, 906014, 1812028, 2265035, 3624056, 4530070, 9060140, 18120280]

約数ペア:

[(1, 18120280), (2, 9060140), (4, 4530070), (5, 3624056), (8, 2265035), (10, 1812028), (20, 906014), (40, 453007), (613, 29560), (739, 24520), (1226, 14780), (1478, 12260), (2452, 7390), (2956, 6130), (3065, 5912), (3695, 4904)]