21507560

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18541}}^1$

素因数の和:18581

約数の個数: 32

約数和(自身を含む): 50063400

約数和(自身を除く): 28555840

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18541, 37082, 74164, 92705, 148328, 185410, 370820, 537689, 741640, 1075378, 2150756, 2688445, 4301512, 5376890, 10753780, 21507560]

約数ペア:

[(1, 21507560), (2, 10753780), (4, 5376890), (5, 4301512), (8, 2688445), (10, 2150756), (20, 1075378), (29, 741640), (40, 537689), (58, 370820), (116, 185410), (145, 148328), (232, 92705), (290, 74164), (580, 37082), (1160, 18541)]