19649440

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{967}}^1$

素因数の和:1109

約数の個数: 48

約数和(自身を含む): 46835712

約数和(自身を除く): 27186272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 967, 1016, 1270, 1934, 2032, 2540, 3868, 4064, 4835, 5080, 7736, 9670, 10160, 15472, 19340, 20320, 30944, 38680, 77360, 122809, 154720, 245618, 491236, 614045, 982472, 1228090, 1964944, 2456180, 3929888, 4912360, 9824720, 19649440]

約数ペア:

[(1, 19649440), (2, 9824720), (4, 4912360), (5, 3929888), (8, 2456180), (10, 1964944), (16, 1228090), (20, 982472), (32, 614045), (40, 491236), (80, 245618), (127, 154720), (160, 122809), (254, 77360), (508, 38680), (635, 30944), (967, 20320), (1016, 19340), (1270, 15472), (1934, 10160), (2032, 9670), (2540, 7736), (3868, 5080), (4064, 4835)]