21426735

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 18386385

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 59, 71, 93, 155, 165, 177, 213, 295, 341, 355, 465, 649, 781, 885, 1023, 1065, 1705, 1829, 1947, 2201, 2343, 3245, 3905, 4189, 5115, 5487, 6603, 9145, 9735, 11005, 11715, 12567, 20119, 20945, 24211, 27435, 33015, 46079, 60357, 62835, 72633, 100595, 121055, 129859, 138237, 230395, 301785, 363165, 389577, 649295, 691185, 1428449, 1947885, 4285347, 7142245, 21426735]

約数ペア:

[(1, 21426735), (3, 7142245), (5, 4285347), (11, 1947885), (15, 1428449), (31, 691185), (33, 649295), (55, 389577), (59, 363165), (71, 301785), (93, 230395), (155, 138237), (165, 129859), (177, 121055), (213, 100595), (295, 72633), (341, 62835), (355, 60357), (465, 46079), (649, 33015), (781, 27435), (885, 24211), (1023, 20945), (1065, 20119), (1705, 12567), (1829, 11715), (1947, 11005), (2201, 9735), (2343, 9145), (3245, 6603), (3905, 5487), (4189, 5115)]