21352436

素因数分解:

$2^2\times 7^3\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:301

約数の個数: 48

約数和(自身を含む): 44352000

約数和(自身を除く): 22999564

約数列:

[1, 2, 4, 7, 14, 28, 49, 79, 98, 158, 196, 197, 316, 343, 394, 553, 686, 788, 1106, 1372, 1379, 2212, 2758, 3871, 5516, 7742, 9653, 15484, 15563, 19306, 27097, 31126, 38612, 54194, 62252, 67571, 108388, 108941, 135142, 217882, 270284, 435764, 762587, 1525174, 3050348, 5338109, 10676218, 21352436]

約数ペア:

[(1, 21352436), (2, 10676218), (4, 5338109), (7, 3050348), (14, 1525174), (28, 762587), (49, 435764), (79, 270284), (98, 217882), (158, 135142), (196, 108941), (197, 108388), (316, 67571), (343, 62252), (394, 54194), (553, 38612), (686, 31126), (788, 27097), (1106, 19306), (1372, 15563), (1379, 15484), (2212, 9653), (2758, 7742), (3871, 5516)]