20597920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{347}}^1$

素因数の和:422

約数の個数: 96

約数和(自身を含む): 56827008

約数和(自身を除く): 36229088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 53, 56, 70, 80, 106, 112, 140, 160, 212, 224, 265, 280, 347, 371, 424, 530, 560, 694, 742, 848, 1060, 1120, 1388, 1484, 1696, 1735, 1855, 2120, 2429, 2776, 2968, 3470, 3710, 4240, 4858, 5552, 5936, 6940, 7420, 8480, 9716, 11104, 11872, 12145, 13880, 14840, 18391, 19432, 24290, 27760, 29680, 36782, 38864, 48580, 55520, 59360, 73564, 77728, 91955, 97160, 128737, 147128, 183910, 194320, 257474, 294256, 367820, 388640, 514948, 588512, 643685, 735640, 1029896, 1287370, 1471280, 2059792, 2574740, 2942560, 4119584, 5149480, 10298960, 20597920]

約数ペア:

[(1, 20597920), (2, 10298960), (4, 5149480), (5, 4119584), (7, 2942560), (8, 2574740), (10, 2059792), (14, 1471280), (16, 1287370), (20, 1029896), (28, 735640), (32, 643685), (35, 588512), (40, 514948), (53, 388640), (56, 367820), (70, 294256), (80, 257474), (106, 194320), (112, 183910), (140, 147128), (160, 128737), (212, 97160), (224, 91955), (265, 77728), (280, 73564), (347, 59360), (371, 55520), (424, 48580), (530, 38864), (560, 36782), (694, 29680), (742, 27760), (848, 24290), (1060, 19432), (1120, 18391), (1388, 14840), (1484, 13880), (1696, 12145), (1735, 11872), (1855, 11104), (2120, 9716), (2429, 8480), (2776, 7420), (2968, 6940), (3470, 5936), (3710, 5552), (4240, 4858)]