1420000

素因数分解:

$2^5\times 5^4\times {\mathrm{71}}^1$

素因数の和:101

約数の個数: 60

約数和(自身を含む): 3542616

約数和(自身を除く): 2122616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 71, 80, 100, 125, 142, 160, 200, 250, 284, 355, 400, 500, 568, 625, 710, 800, 1000, 1136, 1250, 1420, 1775, 2000, 2272, 2500, 2840, 3550, 4000, 5000, 5680, 7100, 8875, 10000, 11360, 14200, 17750, 20000, 28400, 35500, 44375, 56800, 71000, 88750, 142000, 177500, 284000, 355000, 710000, 1420000]

約数ペア:

[(1, 1420000), (2, 710000), (4, 355000), (5, 284000), (8, 177500), (10, 142000), (16, 88750), (20, 71000), (25, 56800), (32, 44375), (40, 35500), (50, 28400), (71, 20000), (80, 17750), (100, 14200), (125, 11360), (142, 10000), (160, 8875), (200, 7100), (250, 5680), (284, 5000), (355, 4000), (400, 3550), (500, 2840), (568, 2500), (625, 2272), (710, 2000), (800, 1775), (1000, 1420), (1136, 1250)]