18609890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:183

約数の個数: 64

約数和(自身を含む): 38265696

約数和(自身を除く): 19655806

約数列:

[1, 2, 5, 10, 13, 26, 37, 53, 65, 73, 74, 106, 130, 146, 185, 265, 365, 370, 481, 530, 689, 730, 949, 962, 1378, 1898, 1961, 2405, 2701, 3445, 3869, 3922, 4745, 4810, 5402, 6890, 7738, 9490, 9805, 13505, 19345, 19610, 25493, 27010, 35113, 38690, 50297, 50986, 70226, 100594, 127465, 143153, 175565, 251485, 254930, 286306, 351130, 502970, 715765, 1431530, 1860989, 3721978, 9304945, 18609890]

約数ペア:

[(1, 18609890), (2, 9304945), (5, 3721978), (10, 1860989), (13, 1431530), (26, 715765), (37, 502970), (53, 351130), (65, 286306), (73, 254930), (74, 251485), (106, 175565), (130, 143153), (146, 127465), (185, 100594), (265, 70226), (365, 50986), (370, 50297), (481, 38690), (530, 35113), (689, 27010), (730, 25493), (949, 19610), (962, 19345), (1378, 13505), (1898, 9805), (1961, 9490), (2405, 7738), (2701, 6890), (3445, 5402), (3869, 4810), (3922, 4745)]