187449860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{720961}}^1$

素因数の和:720983

約数の個数: 24

約数和(自身を含む): 423925656

約数和(自身を除く): 236475796

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 720961, 1441922, 2883844, 3604805, 7209610, 9372493, 14419220, 18744986, 37489972, 46862465, 93724930, 187449860]

約数ペア:

[(1, 187449860), (2, 93724930), (4, 46862465), (5, 37489972), (10, 18744986), (13, 14419220), (20, 9372493), (26, 7209610), (52, 3604805), (65, 2883844), (130, 1441922), (260, 720961)]