157221491

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 207482880

約数和(自身を除く): 50261389

約数列:

[1, 7, 17, 23, 31, 109, 119, 161, 217, 289, 391, 527, 713, 763, 1853, 2023, 2507, 2737, 3379, 3689, 4991, 6647, 8959, 12121, 12971, 17549, 23653, 31501, 42619, 46529, 57443, 62713, 77717, 84847, 206057, 220507, 298333, 402101, 544019, 724523, 976531, 1321189, 1442399, 5071661, 6835717, 9248323, 22460213, 157221491]

約数ペア:

[(1, 157221491), (7, 22460213), (17, 9248323), (23, 6835717), (31, 5071661), (109, 1442399), (119, 1321189), (161, 976531), (217, 724523), (289, 544019), (391, 402101), (527, 298333), (713, 220507), (763, 206057), (1853, 84847), (2023, 77717), (2507, 62713), (2737, 57443), (3379, 46529), (3689, 42619), (4991, 31501), (6647, 23653), (8959, 17549), (12121, 12971)]