8400680

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2039}}^1$

素因数の和:2153

約数の個数: 32

約数和(自身を含む): 19094400

約数和(自身を除く): 10693720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2039, 2060, 4078, 4120, 8156, 10195, 16312, 20390, 40780, 81560, 210017, 420034, 840068, 1050085, 1680136, 2100170, 4200340, 8400680]

約数ペア:

[(1, 8400680), (2, 4200340), (4, 2100170), (5, 1680136), (8, 1050085), (10, 840068), (20, 420034), (40, 210017), (103, 81560), (206, 40780), (412, 20390), (515, 16312), (824, 10195), (1030, 8156), (2039, 4120), (2060, 4078)]