20547045

素因数分解:

$3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 16518555

約数列:

[1, 3, 5, 9, 15, 45, 59, 71, 109, 177, 213, 295, 327, 355, 531, 545, 639, 885, 981, 1065, 1635, 2655, 3195, 4189, 4905, 6431, 7739, 12567, 19293, 20945, 23217, 32155, 37701, 38695, 57879, 62835, 69651, 96465, 116085, 188505, 289395, 348255, 456601, 1369803, 2283005, 4109409, 6849015, 20547045]

約数ペア:

[(1, 20547045), (3, 6849015), (5, 4109409), (9, 2283005), (15, 1369803), (45, 456601), (59, 348255), (71, 289395), (109, 188505), (177, 116085), (213, 96465), (295, 69651), (327, 62835), (355, 57879), (531, 38695), (545, 37701), (639, 32155), (885, 23217), (981, 20945), (1065, 19293), (1635, 12567), (2655, 7739), (3195, 6431), (4189, 4905)]