21820400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{7793}}^1$

素因数の和:7818

約数の個数: 60

約数和(自身を含む): 59920272

約数和(自身を除く): 38099872

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 112, 140, 175, 200, 280, 350, 400, 560, 700, 1400, 2800, 7793, 15586, 31172, 38965, 54551, 62344, 77930, 109102, 124688, 155860, 194825, 218204, 272755, 311720, 389650, 436408, 545510, 623440, 779300, 872816, 1091020, 1363775, 1558600, 2182040, 2727550, 3117200, 4364080, 5455100, 10910200, 21820400]

約数ペア:

[(1, 21820400), (2, 10910200), (4, 5455100), (5, 4364080), (7, 3117200), (8, 2727550), (10, 2182040), (14, 1558600), (16, 1363775), (20, 1091020), (25, 872816), (28, 779300), (35, 623440), (40, 545510), (50, 436408), (56, 389650), (70, 311720), (80, 272755), (100, 218204), (112, 194825), (140, 155860), (175, 124688), (200, 109102), (280, 77930), (350, 62344), (400, 54551), (560, 38965), (700, 31172), (1400, 15586), (2800, 7793)]