21121140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20707}}^1$

素因数の和:20736

約数の個数: 48

約数和(自身を含む): 62620992

約数和(自身を除く): 41499852

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, 20707, 41414, 62121, 82828, 103535, 124242, 207070, 248484, 310605, 352019, 414140, 621210, 704038, 1056057, 1242420, 1408076, 1760095, 2112114, 3520190, 4224228, 5280285, 7040380, 10560570, 21121140]

約数ペア:

[(1, 21121140), (2, 10560570), (3, 7040380), (4, 5280285), (5, 4224228), (6, 3520190), (10, 2112114), (12, 1760095), (15, 1408076), (17, 1242420), (20, 1056057), (30, 704038), (34, 621210), (51, 414140), (60, 352019), (68, 310605), (85, 248484), (102, 207070), (170, 124242), (204, 103535), (255, 82828), (340, 62121), (510, 41414), (1020, 20707)]