19887620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2017}}^1$

素因数の和:2072

約数の個数: 48

約数和(自身を含む): 45768240

約数和(自身を除く): 25880620

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2017, 2465, 4034, 4930, 8068, 9860, 10085, 20170, 34289, 40340, 58493, 68578, 116986, 137156, 171445, 233972, 292465, 342890, 584930, 685780, 994381, 1169860, 1988762, 3977524, 4971905, 9943810, 19887620]

約数ペア:

[(1, 19887620), (2, 9943810), (4, 4971905), (5, 3977524), (10, 1988762), (17, 1169860), (20, 994381), (29, 685780), (34, 584930), (58, 342890), (68, 292465), (85, 233972), (116, 171445), (145, 137156), (170, 116986), (290, 68578), (340, 58493), (493, 40340), (580, 34289), (986, 20170), (1972, 10085), (2017, 9860), (2465, 8068), (4034, 4930)]