18987870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{353}}^1$

素因数の和:537

約数の個数: 64

約数和(自身を含む): 50160384

約数和(自身を除く): 31172514

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 163, 165, 326, 330, 353, 489, 706, 815, 978, 1059, 1630, 1765, 1793, 2118, 2445, 3530, 3586, 3883, 4890, 5295, 5379, 7766, 8965, 10590, 10758, 11649, 17930, 19415, 23298, 26895, 38830, 53790, 57539, 58245, 115078, 116490, 172617, 287695, 345234, 575390, 632929, 863085, 1265858, 1726170, 1898787, 3164645, 3797574, 6329290, 9493935, 18987870]

約数ペア:

[(1, 18987870), (2, 9493935), (3, 6329290), (5, 3797574), (6, 3164645), (10, 1898787), (11, 1726170), (15, 1265858), (22, 863085), (30, 632929), (33, 575390), (55, 345234), (66, 287695), (110, 172617), (163, 116490), (165, 115078), (326, 58245), (330, 57539), (353, 53790), (489, 38830), (706, 26895), (815, 23298), (978, 19415), (1059, 17930), (1630, 11649), (1765, 10758), (1793, 10590), (2118, 8965), (2445, 7766), (3530, 5379), (3586, 5295), (3883, 4890)]