20490780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20089}}^1$

素因数の和:20118

約数の個数: 48

約数和(自身を含む): 60752160

約数和(自身を除く): 40261380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20089, 40178, 60267, 80356, 100445, 120534, 200890, 241068, 301335, 341513, 401780, 602670, 683026, 1024539, 1205340, 1366052, 1707565, 2049078, 3415130, 4098156, 5122695, 6830260, 10245390, 20490780]

約数ペア:

[(1, 20490780), (2, 10245390), (3, 6830260), (4, 5122695), (5, 4098156), (6, 3415130), (10, 2049078), (12, 1707565), (15, 1366052), (17, 1205340), (20, 1024539), (30, 683026), (34, 602670), (51, 401780), (60, 341513), (68, 301335), (85, 241068), (102, 200890), (170, 120534), (204, 100445), (255, 80356), (340, 60267), (510, 40178), (1020, 20089)]