87164120

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:468

約数の個数: 64

約数和(自身を含む): 201549600

約数和(自身を除く): 114385480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 139, 244, 257, 278, 305, 488, 514, 556, 610, 695, 1028, 1112, 1220, 1285, 1390, 2056, 2440, 2570, 2780, 5140, 5560, 8479, 10280, 15677, 16958, 31354, 33916, 35723, 42395, 62708, 67832, 71446, 78385, 84790, 125416, 142892, 156770, 169580, 178615, 285784, 313540, 339160, 357230, 627080, 714460, 1428920, 2179103, 4358206, 8716412, 10895515, 17432824, 21791030, 43582060, 87164120]

約数ペア:

[(1, 87164120), (2, 43582060), (4, 21791030), (5, 17432824), (8, 10895515), (10, 8716412), (20, 4358206), (40, 2179103), (61, 1428920), (122, 714460), (139, 627080), (244, 357230), (257, 339160), (278, 313540), (305, 285784), (488, 178615), (514, 169580), (556, 156770), (610, 142892), (695, 125416), (1028, 84790), (1112, 78385), (1220, 71446), (1285, 67832), (1390, 62708), (2056, 42395), (2440, 35723), (2570, 33916), (2780, 31354), (5140, 16958), (5560, 15677), (8479, 10280)]