20638365

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 37001664

約数和(自身を除く): 16363299

約数列:

[1, 3, 5, 11, 15, 33, 55, 83, 121, 137, 165, 249, 363, 411, 415, 605, 685, 913, 1245, 1507, 1815, 2055, 2739, 4521, 4565, 7535, 10043, 11371, 13695, 16577, 22605, 30129, 34113, 49731, 50215, 56855, 82885, 125081, 150645, 170565, 248655, 375243, 625405, 1375891, 1876215, 4127673, 6879455, 20638365]

約数ペア:

[(1, 20638365), (3, 6879455), (5, 4127673), (11, 1876215), (15, 1375891), (33, 625405), (55, 375243), (83, 248655), (121, 170565), (137, 150645), (165, 125081), (249, 82885), (363, 56855), (411, 50215), (415, 49731), (605, 34113), (685, 30129), (913, 22605), (1245, 16577), (1507, 13695), (1815, 11371), (2055, 10043), (2739, 7535), (4521, 4565)]