213450920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{829}}^1$

素因数の和:1038

約数の個数: 64

約数和(自身を含む): 495709200

約数和(自身を除く): 282258280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 157, 164, 205, 314, 328, 410, 628, 785, 820, 829, 1256, 1570, 1640, 1658, 3140, 3316, 4145, 6280, 6437, 6632, 8290, 12874, 16580, 25748, 32185, 33160, 33989, 51496, 64370, 67978, 128740, 130153, 135956, 169945, 257480, 260306, 271912, 339890, 520612, 650765, 679780, 1041224, 1301530, 1359560, 2603060, 5206120, 5336273, 10672546, 21345092, 26681365, 42690184, 53362730, 106725460, 213450920]

約数ペア:

[(1, 213450920), (2, 106725460), (4, 53362730), (5, 42690184), (8, 26681365), (10, 21345092), (20, 10672546), (40, 5336273), (41, 5206120), (82, 2603060), (157, 1359560), (164, 1301530), (205, 1041224), (314, 679780), (328, 650765), (410, 520612), (628, 339890), (785, 271912), (820, 260306), (829, 257480), (1256, 169945), (1570, 135956), (1640, 130153), (1658, 128740), (3140, 67978), (3316, 64370), (4145, 51496), (6280, 33989), (6437, 33160), (6632, 32185), (8290, 25748), (12874, 16580)]