18661995

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:158

約数の個数: 80

約数和(自身を含む): 37635840

約数和(自身を除く): 18973845

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 59, 71, 81, 99, 135, 165, 177, 213, 295, 297, 355, 405, 495, 531, 639, 649, 781, 885, 891, 1065, 1485, 1593, 1917, 1947, 2343, 2655, 3195, 3245, 3905, 4189, 4455, 4779, 5751, 5841, 7029, 7965, 9585, 9735, 11715, 12567, 17523, 20945, 21087, 23895, 28755, 29205, 35145, 37701, 46079, 52569, 62835, 63261, 87615, 105435, 113103, 138237, 188505, 230395, 262845, 316305, 339309, 414711, 565515, 691185, 1244133, 1696545, 2073555, 3732399, 6220665, 18661995]

約数ペア:

[(1, 18661995), (3, 6220665), (5, 3732399), (9, 2073555), (11, 1696545), (15, 1244133), (27, 691185), (33, 565515), (45, 414711), (55, 339309), (59, 316305), (71, 262845), (81, 230395), (99, 188505), (135, 138237), (165, 113103), (177, 105435), (213, 87615), (295, 63261), (297, 62835), (355, 52569), (405, 46079), (495, 37701), (531, 35145), (639, 29205), (649, 28755), (781, 23895), (885, 21087), (891, 20945), (1065, 17523), (1485, 12567), (1593, 11715), (1917, 9735), (1947, 9585), (2343, 7965), (2655, 7029), (3195, 5841), (3245, 5751), (3905, 4779), (4189, 4455)]