19845760

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2819}}^1$

素因数の和:2849

約数の個数: 64

約数和(自身を含む): 51775200

約数和(自身を除く): 31929440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 2819, 3520, 5638, 7040, 11276, 14095, 22552, 28190, 31009, 45104, 56380, 62018, 90208, 112760, 124036, 155045, 180416, 225520, 248072, 310090, 360832, 451040, 496144, 620180, 902080, 992288, 1240360, 1804160, 1984576, 2480720, 3969152, 4961440, 9922880, 19845760]

約数ペア:

[(1, 19845760), (2, 9922880), (4, 4961440), (5, 3969152), (8, 2480720), (10, 1984576), (11, 1804160), (16, 1240360), (20, 992288), (22, 902080), (32, 620180), (40, 496144), (44, 451040), (55, 360832), (64, 310090), (80, 248072), (88, 225520), (110, 180416), (128, 155045), (160, 124036), (176, 112760), (220, 90208), (320, 62018), (352, 56380), (440, 45104), (640, 31009), (704, 28190), (880, 22552), (1408, 14095), (1760, 11276), (2819, 7040), (3520, 5638)]