25799440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:248

約数の個数: 80

約数和(自身を含む): 63138816

約数和(自身を除く): 37339376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 101, 103, 124, 155, 202, 206, 248, 310, 404, 412, 496, 505, 515, 620, 808, 824, 1010, 1030, 1240, 1616, 1648, 2020, 2060, 2480, 3131, 3193, 4040, 4120, 6262, 6386, 8080, 8240, 10403, 12524, 12772, 15655, 15965, 20806, 25048, 25544, 31310, 31930, 41612, 50096, 51088, 52015, 62620, 63860, 83224, 104030, 125240, 127720, 166448, 208060, 250480, 255440, 322493, 416120, 644986, 832240, 1289972, 1612465, 2579944, 3224930, 5159888, 6449860, 12899720, 25799440]

約数ペア:

[(1, 25799440), (2, 12899720), (4, 6449860), (5, 5159888), (8, 3224930), (10, 2579944), (16, 1612465), (20, 1289972), (31, 832240), (40, 644986), (62, 416120), (80, 322493), (101, 255440), (103, 250480), (124, 208060), (155, 166448), (202, 127720), (206, 125240), (248, 104030), (310, 83224), (404, 63860), (412, 62620), (496, 52015), (505, 51088), (515, 50096), (620, 41612), (808, 31930), (824, 31310), (1010, 25544), (1030, 25048), (1240, 20806), (1616, 15965), (1648, 15655), (2020, 12772), (2060, 12524), (2480, 10403), (3131, 8240), (3193, 8080), (4040, 6386), (4120, 6262)]