289721823

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{991}}^1$

素因数の和:1259

約数の個数: 32

約数和(自身を含む): 426639360

約数和(自身を除く): 136917537

約数列:

[1, 3, 19, 23, 57, 69, 223, 437, 669, 991, 1311, 2973, 4237, 5129, 12711, 15387, 18829, 22793, 56487, 68379, 97451, 220993, 292353, 433067, 662979, 1299201, 4198867, 5082839, 12596601, 15248517, 96573941, 289721823]

約数ペア:

[(1, 289721823), (3, 96573941), (19, 15248517), (23, 12596601), (57, 5082839), (69, 4198867), (223, 1299201), (437, 662979), (669, 433067), (991, 292353), (1311, 220993), (2973, 97451), (4237, 68379), (5129, 56487), (12711, 22793), (15387, 18829)]