251965441

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2389}}^1$

素因数の和:2489

約数の個数: 32

約数和(自身を含む): 331923200

約数和(自身を除く): 79957759

約数列:

[1, 7, 13, 19, 61, 91, 133, 247, 427, 793, 1159, 1729, 2389, 5551, 8113, 15067, 16723, 31057, 45391, 105469, 145729, 217399, 317737, 590083, 1020103, 1894477, 2768851, 4130581, 13261339, 19381957, 35995063, 251965441]

約数ペア:

[(1, 251965441), (7, 35995063), (13, 19381957), (19, 13261339), (61, 4130581), (91, 2768851), (133, 1894477), (247, 1020103), (427, 590083), (793, 317737), (1159, 217399), (1729, 145729), (2389, 105469), (5551, 45391), (8113, 31057), (15067, 16723)]