81185000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{1249}}^1$

素因数の和:1288

約数の個数: 80

約数和(自身を含む): 205012500

約数和(自身を除く): 123827500

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 625, 650, 1000, 1249, 1250, 1300, 1625, 2498, 2500, 2600, 3250, 4996, 5000, 6245, 6500, 8125, 9992, 12490, 13000, 16237, 16250, 24980, 31225, 32474, 32500, 49960, 62450, 64948, 65000, 81185, 124900, 129896, 156125, 162370, 249800, 312250, 324740, 405925, 624500, 649480, 780625, 811850, 1249000, 1561250, 1623700, 2029625, 3122500, 3247400, 4059250, 6245000, 8118500, 10148125, 16237000, 20296250, 40592500, 81185000]

約数ペア:

[(1, 81185000), (2, 40592500), (4, 20296250), (5, 16237000), (8, 10148125), (10, 8118500), (13, 6245000), (20, 4059250), (25, 3247400), (26, 3122500), (40, 2029625), (50, 1623700), (52, 1561250), (65, 1249000), (100, 811850), (104, 780625), (125, 649480), (130, 624500), (200, 405925), (250, 324740), (260, 312250), (325, 249800), (500, 162370), (520, 156125), (625, 129896), (650, 124900), (1000, 81185), (1249, 65000), (1250, 64948), (1300, 62450), (1625, 49960), (2498, 32500), (2500, 32474), (2600, 31225), (3250, 24980), (4996, 16250), (5000, 16237), (6245, 13000), (6500, 12490), (8125, 9992)]