20286780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19889}}^1$

素因数の和:19918

約数の個数: 48

約数和(自身を含む): 60147360

約数和(自身を除く): 39860580

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, 19889, 39778, 59667, 79556, 99445, 119334, 198890, 238668, 298335, 338113, 397780, 596670, 676226, 1014339, 1193340, 1352452, 1690565, 2028678, 3381130, 4057356, 5071695, 6762260, 10143390, 20286780]

約数ペア:

[(1, 20286780), (2, 10143390), (3, 6762260), (4, 5071695), (5, 4057356), (6, 3381130), (10, 2028678), (12, 1690565), (15, 1352452), (17, 1193340), (20, 1014339), (30, 676226), (34, 596670), (51, 397780), (60, 338113), (68, 298335), (85, 238668), (102, 198890), (170, 119334), (204, 99445), (255, 79556), (340, 59667), (510, 39778), (1020, 19889)]