30821720

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{7481}}^1$

素因数の和:7595

約数の個数: 32

約数和(自身を含む): 70031520

約数和(自身を除く): 39209800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 7481, 14962, 29924, 37405, 59848, 74810, 149620, 299240, 770543, 1541086, 3082172, 3852715, 6164344, 7705430, 15410860, 30821720]

約数ペア:

[(1, 30821720), (2, 15410860), (4, 7705430), (5, 6164344), (8, 3852715), (10, 3082172), (20, 1541086), (40, 770543), (103, 299240), (206, 149620), (412, 74810), (515, 59848), (824, 37405), (1030, 29924), (2060, 14962), (4120, 7481)]