8997989

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 12337920

約数和(自身を除く): 3339931

約数列:

[1, 7, 11, 13, 77, 89, 91, 101, 143, 623, 707, 979, 1001, 1111, 1157, 1313, 6853, 7777, 8099, 8989, 9191, 12727, 14443, 62923, 89089, 98879, 101101, 116857, 692153, 817999, 1285427, 8997989]

約数ペア:

[(1, 8997989), (7, 1285427), (11, 817999), (13, 692153), (77, 116857), (89, 101101), (91, 98879), (101, 89089), (143, 62923), (623, 14443), (707, 12727), (979, 9191), (1001, 8989), (1111, 8099), (1157, 7777), (1313, 6853)]