19881704

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^2$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 41415300

約数和(自身を除く): 21533596

約数列:

[1, 2, 4, 8, 17, 29, 34, 58, 68, 71, 116, 136, 142, 232, 284, 493, 568, 986, 1207, 1972, 2059, 2414, 3944, 4118, 4828, 5041, 8236, 9656, 10082, 16472, 20164, 35003, 40328, 70006, 85697, 140012, 146189, 171394, 280024, 292378, 342788, 584756, 685576, 1169512, 2485213, 4970426, 9940852, 19881704]

約数ペア:

[(1, 19881704), (2, 9940852), (4, 4970426), (8, 2485213), (17, 1169512), (29, 685576), (34, 584756), (58, 342788), (68, 292378), (71, 280024), (116, 171394), (136, 146189), (142, 140012), (232, 85697), (284, 70006), (493, 40328), (568, 35003), (986, 20164), (1207, 16472), (1972, 10082), (2059, 9656), (2414, 8236), (3944, 5041), (4118, 4828)]