421470320

素因数分解:

$2^4\times 5^1\times {\mathrm{641}}^1\times {\mathrm{8219}}^1$

素因数の和:8873

約数の個数: 40

約数和(自身を含む): 981566640

約数和(自身を除く): 560096320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641, 1282, 2564, 3205, 5128, 6410, 8219, 10256, 12820, 16438, 25640, 32876, 41095, 51280, 65752, 82190, 131504, 164380, 328760, 657520, 5268379, 10536758, 21073516, 26341895, 42147032, 52683790, 84294064, 105367580, 210735160, 421470320]

約数ペア:

[(1, 421470320), (2, 210735160), (4, 105367580), (5, 84294064), (8, 52683790), (10, 42147032), (16, 26341895), (20, 21073516), (40, 10536758), (80, 5268379), (641, 657520), (1282, 328760), (2564, 164380), (3205, 131504), (5128, 82190), (6410, 65752), (8219, 51280), (10256, 41095), (12820, 32876), (16438, 25640)]