18659888

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{317}}^1$

素因数の和:621

約数の個数: 40

約数和(自身を含む): 39195408

約数和(自身を除く): 20535520

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 283, 317, 566, 634, 1132, 1268, 2264, 2536, 3679, 4121, 4528, 5072, 7358, 8242, 14716, 16484, 29432, 32968, 58864, 65936, 89711, 179422, 358844, 717688, 1166243, 1435376, 2332486, 4664972, 9329944, 18659888]

約数ペア:

[(1, 18659888), (2, 9329944), (4, 4664972), (8, 2332486), (13, 1435376), (16, 1166243), (26, 717688), (52, 358844), (104, 179422), (208, 89711), (283, 65936), (317, 58864), (566, 32968), (634, 29432), (1132, 16484), (1268, 14716), (2264, 8242), (2536, 7358), (3679, 5072), (4121, 4528)]