28293130

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:474

約数の個数: 32

約数和(自身を含む): 52105680

約数和(自身を除く): 23812550

約数列:

[1, 2, 5, 10, 101, 109, 202, 218, 257, 505, 514, 545, 1010, 1090, 1285, 2570, 11009, 22018, 25957, 28013, 51914, 55045, 56026, 110090, 129785, 140065, 259570, 280130, 2829313, 5658626, 14146565, 28293130]

約数ペア:

[(1, 28293130), (2, 14146565), (5, 5658626), (10, 2829313), (101, 280130), (109, 259570), (202, 140065), (218, 129785), (257, 110090), (505, 56026), (514, 55045), (545, 51914), (1010, 28013), (1090, 25957), (1285, 22018), (2570, 11009)]