21304960

素因数分解:

$2^7\times 5^1\times {\mathrm{33289}}^1$

素因数の和:33308

約数の個数: 32

約数和(自身を含む): 50933700

約数和(自身を除く): 29628740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33289, 66578, 133156, 166445, 266312, 332890, 532624, 665780, 1065248, 1331560, 2130496, 2663120, 4260992, 5326240, 10652480, 21304960]

約数ペア:

[(1, 21304960), (2, 10652480), (4, 5326240), (5, 4260992), (8, 2663120), (10, 2130496), (16, 1331560), (20, 1065248), (32, 665780), (40, 532624), (64, 332890), (80, 266312), (128, 166445), (160, 133156), (320, 66578), (640, 33289)]