19944080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{151}}^1$

素因数の和:304

約数の個数: 80

約数和(自身を含む): 50663424

約数和(自身を除く): 30719344

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 127, 130, 151, 208, 254, 260, 302, 508, 520, 604, 635, 755, 1016, 1040, 1208, 1270, 1510, 1651, 1963, 2032, 2416, 2540, 3020, 3302, 3926, 5080, 6040, 6604, 7852, 8255, 9815, 10160, 12080, 13208, 15704, 16510, 19177, 19630, 26416, 31408, 33020, 38354, 39260, 66040, 76708, 78520, 95885, 132080, 153416, 157040, 191770, 249301, 306832, 383540, 498602, 767080, 997204, 1246505, 1534160, 1994408, 2493010, 3988816, 4986020, 9972040, 19944080]

約数ペア:

[(1, 19944080), (2, 9972040), (4, 4986020), (5, 3988816), (8, 2493010), (10, 1994408), (13, 1534160), (16, 1246505), (20, 997204), (26, 767080), (40, 498602), (52, 383540), (65, 306832), (80, 249301), (104, 191770), (127, 157040), (130, 153416), (151, 132080), (208, 95885), (254, 78520), (260, 76708), (302, 66040), (508, 39260), (520, 38354), (604, 33020), (635, 31408), (755, 26416), (1016, 19630), (1040, 19177), (1208, 16510), (1270, 15704), (1510, 13208), (1651, 12080), (1963, 10160), (2032, 9815), (2416, 8255), (2540, 7852), (3020, 6604), (3302, 6040), (3926, 5080)]