28505000

素因数分解:

$2^3\times 5^4\times {\mathrm{5701}}^1$

素因数の和:5727

約数の個数: 40

約数和(自身を含む): 66798930

約数和(自身を除く): 38293930

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 5701, 11402, 22804, 28505, 45608, 57010, 114020, 142525, 228040, 285050, 570100, 712625, 1140200, 1425250, 2850500, 3563125, 5701000, 7126250, 14252500, 28505000]

約数ペア:

[(1, 28505000), (2, 14252500), (4, 7126250), (5, 5701000), (8, 3563125), (10, 2850500), (20, 1425250), (25, 1140200), (40, 712625), (50, 570100), (100, 285050), (125, 228040), (200, 142525), (250, 114020), (500, 57010), (625, 45608), (1000, 28505), (1250, 22804), (2500, 11402), (5000, 5701)]