21151360

素因数分解:

$2^7\times 5^1\times {\mathrm{33049}}^1$

素因数の和:33068

約数の個数: 32

約数和(自身を含む): 50566500

約数和(自身を除く): 29415140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33049, 66098, 132196, 165245, 264392, 330490, 528784, 660980, 1057568, 1321960, 2115136, 2643920, 4230272, 5287840, 10575680, 21151360]

約数ペア:

[(1, 21151360), (2, 10575680), (4, 5287840), (5, 4230272), (8, 2643920), (10, 2115136), (16, 1321960), (20, 1057568), (32, 660980), (40, 528784), (64, 330490), (80, 264392), (128, 165245), (160, 132196), (320, 66098), (640, 33049)]