21780640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19447}}^1$

素因数の和:19469

約数の個数: 48

約数和(自身を含む): 58810752

約数和(自身を除く): 37030112

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 19447, 38894, 77788, 97235, 136129, 155576, 194470, 272258, 311152, 388940, 544516, 622304, 680645, 777880, 1089032, 1361290, 1555760, 2178064, 2722580, 3111520, 4356128, 5445160, 10890320, 21780640]

約数ペア:

[(1, 21780640), (2, 10890320), (4, 5445160), (5, 4356128), (7, 3111520), (8, 2722580), (10, 2178064), (14, 1555760), (16, 1361290), (20, 1089032), (28, 777880), (32, 680645), (35, 622304), (40, 544516), (56, 388940), (70, 311152), (80, 272258), (112, 194470), (140, 155576), (160, 136129), (224, 97235), (280, 77788), (560, 38894), (1120, 19447)]