21026750

素因数分解:

$2^1\times 5^3\times {\mathrm{151}}^1\times {\mathrm{557}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 39693888

約数和(自身を除く): 18667138

約数列:

[1, 2, 5, 10, 25, 50, 125, 151, 250, 302, 557, 755, 1114, 1510, 2785, 3775, 5570, 7550, 13925, 18875, 27850, 37750, 69625, 84107, 139250, 168214, 420535, 841070, 2102675, 4205350, 10513375, 21026750]

約数ペア:

[(1, 21026750), (2, 10513375), (5, 4205350), (10, 2102675), (25, 841070), (50, 420535), (125, 168214), (151, 139250), (250, 84107), (302, 69625), (557, 37750), (755, 27850), (1114, 18875), (1510, 13925), (2785, 7550), (3775, 5570)]