72881641

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:313

約数の個数: 32

約数和(自身を含む): 90994176

約数和(自身を除く): 18112535

約数列:

[1, 7, 23, 41, 61, 161, 181, 287, 427, 943, 1267, 1403, 2501, 4163, 6601, 7421, 9821, 11041, 17507, 29141, 51947, 57523, 77287, 170683, 253943, 402661, 452681, 1194781, 1777601, 3168767, 10411663, 72881641]

約数ペア:

[(1, 72881641), (7, 10411663), (23, 3168767), (41, 1777601), (61, 1194781), (161, 452681), (181, 402661), (287, 253943), (427, 170683), (943, 77287), (1267, 57523), (1403, 51947), (2501, 29141), (4163, 17507), (6601, 11041), (7421, 9821)]