31420000

素因数分解:

$2^5\times 5^4\times {\mathrm{1571}}^1$

素因数の和:1601

約数の個数: 60

約数和(自身を含む): 77347116

約数和(自身を除く): 45927116

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 1571, 2000, 2500, 3142, 4000, 5000, 6284, 7855, 10000, 12568, 15710, 20000, 25136, 31420, 39275, 50272, 62840, 78550, 125680, 157100, 196375, 251360, 314200, 392750, 628400, 785500, 981875, 1256800, 1571000, 1963750, 3142000, 3927500, 6284000, 7855000, 15710000, 31420000]

約数ペア:

[(1, 31420000), (2, 15710000), (4, 7855000), (5, 6284000), (8, 3927500), (10, 3142000), (16, 1963750), (20, 1571000), (25, 1256800), (32, 981875), (40, 785500), (50, 628400), (80, 392750), (100, 314200), (125, 251360), (160, 196375), (200, 157100), (250, 125680), (400, 78550), (500, 62840), (625, 50272), (800, 39275), (1000, 31420), (1250, 25136), (1571, 20000), (2000, 15710), (2500, 12568), (3142, 10000), (4000, 7855), (5000, 6284)]