28395440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20879}}^1$

素因数の和:20909

約数の個数: 40

約数和(自身を含む): 69906240

約数和(自身を除く): 41510800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 20879, 41758, 83516, 104395, 167032, 208790, 334064, 354943, 417580, 709886, 835160, 1419772, 1670320, 1774715, 2839544, 3549430, 5679088, 7098860, 14197720, 28395440]

約数ペア:

[(1, 28395440), (2, 14197720), (4, 7098860), (5, 5679088), (8, 3549430), (10, 2839544), (16, 1774715), (17, 1670320), (20, 1419772), (34, 835160), (40, 709886), (68, 417580), (80, 354943), (85, 334064), (136, 208790), (170, 167032), (272, 104395), (340, 83516), (680, 41758), (1360, 20879)]