12899720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 30551040

約数和(自身を除く): 17651320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 101, 103, 124, 155, 202, 206, 248, 310, 404, 412, 505, 515, 620, 808, 824, 1010, 1030, 1240, 2020, 2060, 3131, 3193, 4040, 4120, 6262, 6386, 10403, 12524, 12772, 15655, 15965, 20806, 25048, 25544, 31310, 31930, 41612, 52015, 62620, 63860, 83224, 104030, 125240, 127720, 208060, 322493, 416120, 644986, 1289972, 1612465, 2579944, 3224930, 6449860, 12899720]

約数ペア:

[(1, 12899720), (2, 6449860), (4, 3224930), (5, 2579944), (8, 1612465), (10, 1289972), (20, 644986), (31, 416120), (40, 322493), (62, 208060), (101, 127720), (103, 125240), (124, 104030), (155, 83224), (202, 63860), (206, 62620), (248, 52015), (310, 41612), (404, 31930), (412, 31310), (505, 25544), (515, 25048), (620, 20806), (808, 15965), (824, 15655), (1010, 12772), (1030, 12524), (1240, 10403), (2020, 6386), (2060, 6262), (3131, 4120), (3193, 4040)]