20739735

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{191}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 38338560

約数和(自身を除く): 17598825

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 127, 171, 191, 285, 381, 573, 635, 855, 955, 1143, 1719, 1905, 2413, 2865, 3629, 5715, 7239, 8595, 10887, 12065, 18145, 21717, 24257, 32661, 36195, 54435, 72771, 108585, 121285, 163305, 218313, 363855, 460883, 1091565, 1382649, 2304415, 4147947, 6913245, 20739735]

約数ペア:

[(1, 20739735), (3, 6913245), (5, 4147947), (9, 2304415), (15, 1382649), (19, 1091565), (45, 460883), (57, 363855), (95, 218313), (127, 163305), (171, 121285), (191, 108585), (285, 72771), (381, 54435), (573, 36195), (635, 32661), (855, 24257), (955, 21717), (1143, 18145), (1719, 12065), (1905, 10887), (2413, 8595), (2865, 7239), (3629, 5715)]