247406901

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{2137}}^1$

素因数の和:2333

約数の個数: 32

約数和(自身を含む): 389971200

約数和(自身を除く): 142564299

約数列:

[1, 3, 7, 21, 37, 111, 149, 259, 447, 777, 1043, 2137, 3129, 5513, 6411, 14959, 16539, 38591, 44877, 79069, 115773, 237207, 318413, 553483, 955239, 1660449, 2228891, 6686673, 11781281, 35343843, 82468967, 247406901]

約数ペア:

[(1, 247406901), (3, 82468967), (7, 35343843), (21, 11781281), (37, 6686673), (111, 2228891), (149, 1660449), (259, 955239), (447, 553483), (777, 318413), (1043, 237207), (2137, 115773), (3129, 79069), (5513, 44877), (6411, 38591), (14959, 16539)]