20772555

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^2$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 37104480

約数和(自身を除く): 16331925

約数列:

[1, 3, 5, 15, 17, 29, 51, 53, 85, 87, 145, 159, 255, 265, 435, 493, 795, 901, 1479, 1537, 2465, 2703, 2809, 4505, 4611, 7395, 7685, 8427, 13515, 14045, 23055, 26129, 42135, 47753, 78387, 81461, 130645, 143259, 238765, 244383, 391935, 407305, 716295, 1221915, 1384837, 4154511, 6924185, 20772555]

約数ペア:

[(1, 20772555), (3, 6924185), (5, 4154511), (15, 1384837), (17, 1221915), (29, 716295), (51, 407305), (53, 391935), (85, 244383), (87, 238765), (145, 143259), (159, 130645), (255, 81461), (265, 78387), (435, 47753), (493, 42135), (795, 26129), (901, 23055), (1479, 14045), (1537, 13515), (2465, 8427), (2703, 7685), (2809, 7395), (4505, 4611)]