104905000

素因数分解:

$2^3\times 5^4\times {\mathrm{20981}}^1$

素因数の和:21007

約数の個数: 40

約数和(自身を含む): 245804130

約数和(自身を除く): 140899130

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 20981, 41962, 83924, 104905, 167848, 209810, 419620, 524525, 839240, 1049050, 2098100, 2622625, 4196200, 5245250, 10490500, 13113125, 20981000, 26226250, 52452500, 104905000]

約数ペア:

[(1, 104905000), (2, 52452500), (4, 26226250), (5, 20981000), (8, 13113125), (10, 10490500), (20, 5245250), (25, 4196200), (40, 2622625), (50, 2098100), (100, 1049050), (125, 839240), (200, 524525), (250, 419620), (500, 209810), (625, 167848), (1000, 104905), (1250, 83924), (2500, 41962), (5000, 20981)]