20123892490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9803}}^1\times {\mathrm{15791}}^1$

素因数の和:25614

約数の個数: 32

約数和(自身を含む): 39015841536

約数和(自身を除く): 18891949046

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 9803, 15791, 19606, 31582, 49015, 78955, 98030, 127439, 157910, 205283, 254878, 410566, 637195, 1026415, 1274390, 2052830, 154799173, 309598346, 773995865, 1547991730, 2012389249, 4024778498, 10061946245, 20123892490]

約数ペア:

[(1, 20123892490), (2, 10061946245), (5, 4024778498), (10, 2012389249), (13, 1547991730), (26, 773995865), (65, 309598346), (130, 154799173), (9803, 2052830), (15791, 1274390), (19606, 1026415), (31582, 637195), (49015, 410566), (78955, 254878), (98030, 205283), (127439, 157910)]