19163740

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{179}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 41640480

約数和(自身を除く): 22476740

約数列:

[1, 2, 4, 5, 10, 20, 53, 101, 106, 179, 202, 212, 265, 358, 404, 505, 530, 716, 895, 1010, 1060, 1790, 2020, 3580, 5353, 9487, 10706, 18079, 18974, 21412, 26765, 36158, 37948, 47435, 53530, 72316, 90395, 94870, 107060, 180790, 189740, 361580, 958187, 1916374, 3832748, 4790935, 9581870, 19163740]

約数ペア:

[(1, 19163740), (2, 9581870), (4, 4790935), (5, 3832748), (10, 1916374), (20, 958187), (53, 361580), (101, 189740), (106, 180790), (179, 107060), (202, 94870), (212, 90395), (265, 72316), (358, 53530), (404, 47435), (505, 37948), (530, 36158), (716, 26765), (895, 21412), (1010, 18974), (1060, 18079), (1790, 10706), (2020, 9487), (3580, 5353)]