80455700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{311}}^1$

素因数の和:537

約数の個数: 72

約数和(自身を含む): 189571200

約数和(自身を除く): 109115500

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 199, 260, 311, 325, 398, 622, 650, 796, 995, 1244, 1300, 1555, 1990, 2587, 3110, 3980, 4043, 4975, 5174, 6220, 7775, 8086, 9950, 10348, 12935, 15550, 16172, 19900, 20215, 25870, 31100, 40430, 51740, 61889, 64675, 80860, 101075, 123778, 129350, 202150, 247556, 258700, 309445, 404300, 618890, 804557, 1237780, 1547225, 1609114, 3094450, 3218228, 4022785, 6188900, 8045570, 16091140, 20113925, 40227850, 80455700]

約数ペア:

[(1, 80455700), (2, 40227850), (4, 20113925), (5, 16091140), (10, 8045570), (13, 6188900), (20, 4022785), (25, 3218228), (26, 3094450), (50, 1609114), (52, 1547225), (65, 1237780), (100, 804557), (130, 618890), (199, 404300), (260, 309445), (311, 258700), (325, 247556), (398, 202150), (622, 129350), (650, 123778), (796, 101075), (995, 80860), (1244, 64675), (1300, 61889), (1555, 51740), (1990, 40430), (2587, 31100), (3110, 25870), (3980, 20215), (4043, 19900), (4975, 16172), (5174, 15550), (6220, 12935), (7775, 10348), (8086, 9950)]