81907917

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{15791}}^1$

素因数の和:15833

約数の個数: 32

約数和(自身を含む): 141496320

約数和(自身を除く): 59588403

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 5187, 15791, 47373, 110537, 205283, 300029, 331611, 615849, 900087, 1436981, 2100203, 3900377, 4310943, 6300609, 11701131, 27302639, 81907917]

約数ペア:

[(1, 81907917), (3, 27302639), (7, 11701131), (13, 6300609), (19, 4310943), (21, 3900377), (39, 2100203), (57, 1436981), (91, 900087), (133, 615849), (247, 331611), (273, 300029), (399, 205283), (741, 110537), (1729, 47373), (5187, 15791)]