28178260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{349}}^1\times {\mathrm{367}}^1$

素因数の和:736

約数の個数: 48

約数和(自身を含む): 64915200

約数和(自身を除く): 36736940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 349, 367, 698, 734, 1396, 1468, 1745, 1835, 3490, 3670, 3839, 4037, 6980, 7340, 7678, 8074, 15356, 16148, 19195, 20185, 38390, 40370, 76780, 80740, 128083, 256166, 512332, 640415, 1280830, 1408913, 2561660, 2817826, 5635652, 7044565, 14089130, 28178260]

約数ペア:

[(1, 28178260), (2, 14089130), (4, 7044565), (5, 5635652), (10, 2817826), (11, 2561660), (20, 1408913), (22, 1280830), (44, 640415), (55, 512332), (110, 256166), (220, 128083), (349, 80740), (367, 76780), (698, 40370), (734, 38390), (1396, 20185), (1468, 19195), (1745, 16148), (1835, 15356), (3490, 8074), (3670, 7678), (3839, 7340), (4037, 6980)]