31510520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{311}}^1$

素因数の和:488

約数の個数: 64

約数和(自身を含む): 75816000

約数和(自身を除く): 44305480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 149, 170, 298, 311, 340, 596, 622, 680, 745, 1192, 1244, 1490, 1555, 2488, 2533, 2980, 3110, 5066, 5287, 5960, 6220, 10132, 10574, 12440, 12665, 20264, 21148, 25330, 26435, 42296, 46339, 50660, 52870, 92678, 101320, 105740, 185356, 211480, 231695, 370712, 463390, 787763, 926780, 1575526, 1853560, 3151052, 3938815, 6302104, 7877630, 15755260, 31510520]

約数ペア:

[(1, 31510520), (2, 15755260), (4, 7877630), (5, 6302104), (8, 3938815), (10, 3151052), (17, 1853560), (20, 1575526), (34, 926780), (40, 787763), (68, 463390), (85, 370712), (136, 231695), (149, 211480), (170, 185356), (298, 105740), (311, 101320), (340, 92678), (596, 52870), (622, 50660), (680, 46339), (745, 42296), (1192, 26435), (1244, 25330), (1490, 21148), (1555, 20264), (2488, 12665), (2533, 12440), (2980, 10574), (3110, 10132), (5066, 6220), (5287, 5960)]