28001281

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 37029888

約数和(自身を除く): 9028607

約数列:

[1, 7, 11, 23, 77, 97, 161, 163, 253, 679, 1067, 1141, 1771, 1793, 2231, 3749, 7469, 12551, 15617, 15811, 24541, 26243, 41239, 110677, 171787, 173921, 288673, 363653, 1217447, 2545571, 4000183, 28001281]

約数ペア:

[(1, 28001281), (7, 4000183), (11, 2545571), (23, 1217447), (77, 363653), (97, 288673), (161, 173921), (163, 171787), (253, 110677), (679, 41239), (1067, 26243), (1141, 24541), (1771, 15811), (1793, 15617), (2231, 12551), (3749, 7469)]