9005000

素因数分解:

$2^3\times 5^4\times {\mathrm{1801}}^1$

素因数の和:1827

約数の個数: 40

約数和(自身を含む): 21110430

約数和(自身を除く): 12105430

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 1801, 2500, 3602, 5000, 7204, 9005, 14408, 18010, 36020, 45025, 72040, 90050, 180100, 225125, 360200, 450250, 900500, 1125625, 1801000, 2251250, 4502500, 9005000]

約数ペア:

[(1, 9005000), (2, 4502500), (4, 2251250), (5, 1801000), (8, 1125625), (10, 900500), (20, 450250), (25, 360200), (40, 225125), (50, 180100), (100, 90050), (125, 72040), (200, 45025), (250, 36020), (500, 18010), (625, 14408), (1000, 9005), (1250, 7204), (1801, 5000), (2500, 3602)]