18881900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{383}}^1$

素因数の和:443

約数の個数: 72

約数和(自身を含む): 44997120

約数和(自身を除く): 26115220

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 29, 34, 50, 58, 68, 85, 100, 116, 145, 170, 290, 340, 383, 425, 493, 580, 725, 766, 850, 986, 1450, 1532, 1700, 1915, 1972, 2465, 2900, 3830, 4930, 6511, 7660, 9575, 9860, 11107, 12325, 13022, 19150, 22214, 24650, 26044, 32555, 38300, 44428, 49300, 55535, 65110, 111070, 130220, 162775, 188819, 222140, 277675, 325550, 377638, 555350, 651100, 755276, 944095, 1110700, 1888190, 3776380, 4720475, 9440950, 18881900]

約数ペア:

[(1, 18881900), (2, 9440950), (4, 4720475), (5, 3776380), (10, 1888190), (17, 1110700), (20, 944095), (25, 755276), (29, 651100), (34, 555350), (50, 377638), (58, 325550), (68, 277675), (85, 222140), (100, 188819), (116, 162775), (145, 130220), (170, 111070), (290, 65110), (340, 55535), (383, 49300), (425, 44428), (493, 38300), (580, 32555), (725, 26044), (766, 24650), (850, 22214), (986, 19150), (1450, 13022), (1532, 12325), (1700, 11107), (1915, 9860), (1972, 9575), (2465, 7660), (2900, 6511), (3830, 4930)]