21235840

素因数分解:

$2^7\times 5^1\times {\mathrm{33181}}^1$

素因数の和:33200

約数の個数: 32

約数和(自身を含む): 50768460

約数和(自身を除く): 29532620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33181, 66362, 132724, 165905, 265448, 331810, 530896, 663620, 1061792, 1327240, 2123584, 2654480, 4247168, 5308960, 10617920, 21235840]

約数ペア:

[(1, 21235840), (2, 10617920), (4, 5308960), (5, 4247168), (8, 2654480), (10, 2123584), (16, 1327240), (20, 1061792), (32, 663620), (40, 530896), (64, 331810), (80, 265448), (128, 165905), (160, 132724), (320, 66362), (640, 33181)]