890477500

素因数分解:

$2^2\times 5^4\times {\mathrm{11}}^1\times {\mathrm{32381}}^1$

素因数の和:32416

約数の個数: 60

約数和(自身を含む): 2124388728

約数和(自身を除く): 1233911228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 625, 1100, 1250, 1375, 2500, 2750, 5500, 6875, 13750, 27500, 32381, 64762, 129524, 161905, 323810, 356191, 647620, 712382, 809525, 1424764, 1619050, 1780955, 3238100, 3561910, 4047625, 7123820, 8095250, 8904775, 16190500, 17809550, 20238125, 35619100, 40476250, 44523875, 80952500, 89047750, 178095500, 222619375, 445238750, 890477500]

約数ペア:

[(1, 890477500), (2, 445238750), (4, 222619375), (5, 178095500), (10, 89047750), (11, 80952500), (20, 44523875), (22, 40476250), (25, 35619100), (44, 20238125), (50, 17809550), (55, 16190500), (100, 8904775), (110, 8095250), (125, 7123820), (220, 4047625), (250, 3561910), (275, 3238100), (500, 1780955), (550, 1619050), (625, 1424764), (1100, 809525), (1250, 712382), (1375, 647620), (2500, 356191), (2750, 323810), (5500, 161905), (6875, 129524), (13750, 64762), (27500, 32381)]