51885440

素因数分解:

$2^7\times 5^1\times {\mathrm{81071}}^1$

素因数の和:81090

約数の個数: 32

約数和(自身を含む): 124040160

約数和(自身を除く): 72154720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 81071, 162142, 324284, 405355, 648568, 810710, 1297136, 1621420, 2594272, 3242840, 5188544, 6485680, 10377088, 12971360, 25942720, 51885440]

約数ペア:

[(1, 51885440), (2, 25942720), (4, 12971360), (5, 10377088), (8, 6485680), (10, 5188544), (16, 3242840), (20, 2594272), (32, 1621420), (40, 1297136), (64, 810710), (80, 648568), (128, 405355), (160, 324284), (320, 162142), (640, 81071)]