81604900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{62773}}^1$

素因数の和:62800

約数の個数: 36

約数和(自身を含む): 190707412

約数和(自身を除く): 109102512

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 62773, 125546, 251092, 313865, 627730, 816049, 1255460, 1569325, 1632098, 3138650, 3264196, 4080245, 6277300, 8160490, 16320980, 20401225, 40802450, 81604900]

約数ペア:

[(1, 81604900), (2, 40802450), (4, 20401225), (5, 16320980), (10, 8160490), (13, 6277300), (20, 4080245), (25, 3264196), (26, 3138650), (50, 1632098), (52, 1569325), (65, 1255460), (100, 816049), (130, 627730), (260, 313865), (325, 251092), (650, 125546), (1300, 62773)]