51229100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{251}}^1$

素因数の和:435

約数の個数: 72

約数和(自身を含む): 120961008

約数和(自身を除く): 69731908

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 157, 251, 260, 314, 325, 502, 628, 650, 785, 1004, 1255, 1300, 1570, 2041, 2510, 3140, 3263, 3925, 4082, 5020, 6275, 6526, 7850, 8164, 10205, 12550, 13052, 15700, 16315, 20410, 25100, 32630, 39407, 40820, 51025, 65260, 78814, 81575, 102050, 157628, 163150, 197035, 204100, 326300, 394070, 512291, 788140, 985175, 1024582, 1970350, 2049164, 2561455, 3940700, 5122910, 10245820, 12807275, 25614550, 51229100]

約数ペア:

[(1, 51229100), (2, 25614550), (4, 12807275), (5, 10245820), (10, 5122910), (13, 3940700), (20, 2561455), (25, 2049164), (26, 1970350), (50, 1024582), (52, 985175), (65, 788140), (100, 512291), (130, 394070), (157, 326300), (251, 204100), (260, 197035), (314, 163150), (325, 157628), (502, 102050), (628, 81575), (650, 78814), (785, 65260), (1004, 51025), (1255, 40820), (1300, 39407), (1570, 32630), (2041, 25100), (2510, 20410), (3140, 16315), (3263, 15700), (3925, 13052), (4082, 12550), (5020, 10205), (6275, 8164), (6526, 7850)]