28947640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{929}}^1$

素因数の和:1000

約数の個数: 64

約数和(自身を含む): 70308000

約数和(自身を除く): 41360360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 760, 779, 820, 929, 1558, 1640, 1858, 3116, 3716, 3895, 4645, 6232, 7432, 7790, 9290, 15580, 17651, 18580, 31160, 35302, 37160, 38089, 70604, 76178, 88255, 141208, 152356, 176510, 190445, 304712, 353020, 380890, 706040, 723691, 761780, 1447382, 1523560, 2894764, 3618455, 5789528, 7236910, 14473820, 28947640]

約数ペア:

[(1, 28947640), (2, 14473820), (4, 7236910), (5, 5789528), (8, 3618455), (10, 2894764), (19, 1523560), (20, 1447382), (38, 761780), (40, 723691), (41, 706040), (76, 380890), (82, 353020), (95, 304712), (152, 190445), (164, 176510), (190, 152356), (205, 141208), (328, 88255), (380, 76178), (410, 70604), (760, 38089), (779, 37160), (820, 35302), (929, 31160), (1558, 18580), (1640, 17651), (1858, 15580), (3116, 9290), (3716, 7790), (3895, 7432), (4645, 6232)]