51729220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 111711600

約数和(自身を除く): 59982380

約数列:

[1, 2, 4, 5, 10, 20, 61, 109, 122, 218, 244, 305, 389, 436, 545, 610, 778, 1090, 1220, 1556, 1945, 2180, 3890, 6649, 7780, 13298, 23729, 26596, 33245, 42401, 47458, 66490, 84802, 94916, 118645, 132980, 169604, 212005, 237290, 424010, 474580, 848020, 2586461, 5172922, 10345844, 12932305, 25864610, 51729220]

約数ペア:

[(1, 51729220), (2, 25864610), (4, 12932305), (5, 10345844), (10, 5172922), (20, 2586461), (61, 848020), (109, 474580), (122, 424010), (218, 237290), (244, 212005), (305, 169604), (389, 132980), (436, 118645), (545, 94916), (610, 84802), (778, 66490), (1090, 47458), (1220, 42401), (1556, 33245), (1945, 26596), (2180, 23729), (3890, 13298), (6649, 7780)]