28679320

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{6961}}^1$

素因数の和:7075

約数の個数: 32

約数和(自身を含む): 65164320

約数和(自身を除く): 36485000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 6961, 13922, 27844, 34805, 55688, 69610, 139220, 278440, 716983, 1433966, 2867932, 3584915, 5735864, 7169830, 14339660, 28679320]

約数ペア:

[(1, 28679320), (2, 14339660), (4, 7169830), (5, 5735864), (8, 3584915), (10, 2867932), (20, 1433966), (40, 716983), (103, 278440), (206, 139220), (412, 69610), (515, 55688), (824, 34805), (1030, 27844), (2060, 13922), (4120, 6961)]