12221980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{349}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 27518400

約数和(自身を除く): 15296420

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 103, 170, 206, 340, 349, 412, 515, 698, 1030, 1396, 1745, 1751, 2060, 3490, 3502, 5933, 6980, 7004, 8755, 11866, 17510, 23732, 29665, 35020, 35947, 59330, 71894, 118660, 143788, 179735, 359470, 611099, 718940, 1222198, 2444396, 3055495, 6110990, 12221980]

約数ペア:

[(1, 12221980), (2, 6110990), (4, 3055495), (5, 2444396), (10, 1222198), (17, 718940), (20, 611099), (34, 359470), (68, 179735), (85, 143788), (103, 118660), (170, 71894), (206, 59330), (340, 35947), (349, 35020), (412, 29665), (515, 23732), (698, 17510), (1030, 11866), (1396, 8755), (1745, 7004), (1751, 6980), (2060, 5933), (3490, 3502)]