138457940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{127}}^1\times {\mathrm{151}}^1$

素因数の和:325

約数の個数: 72

約数和(自身を含む): 311334912

約数和(自身を除く): 172876972

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 127, 151, 190, 254, 302, 361, 380, 508, 604, 635, 722, 755, 1270, 1444, 1510, 1805, 2413, 2540, 2869, 3020, 3610, 4826, 5738, 7220, 9652, 11476, 12065, 14345, 19177, 24130, 28690, 38354, 45847, 48260, 54511, 57380, 76708, 91694, 95885, 109022, 183388, 191770, 218044, 229235, 272555, 364363, 383540, 458470, 545110, 728726, 916940, 1090220, 1457452, 1821815, 3643630, 6922897, 7287260, 13845794, 27691588, 34614485, 69228970, 138457940]

約数ペア:

[(1, 138457940), (2, 69228970), (4, 34614485), (5, 27691588), (10, 13845794), (19, 7287260), (20, 6922897), (38, 3643630), (76, 1821815), (95, 1457452), (127, 1090220), (151, 916940), (190, 728726), (254, 545110), (302, 458470), (361, 383540), (380, 364363), (508, 272555), (604, 229235), (635, 218044), (722, 191770), (755, 183388), (1270, 109022), (1444, 95885), (1510, 91694), (1805, 76708), (2413, 57380), (2540, 54511), (2869, 48260), (3020, 45847), (3610, 38354), (4826, 28690), (5738, 24130), (7220, 19177), (9652, 14345), (11476, 12065)]