21486255

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 44126208

約数和(自身を除く): 22639953

約数列:

[1, 3, 5, 7, 15, 21, 23, 31, 35, 41, 49, 69, 93, 105, 115, 123, 147, 155, 161, 205, 217, 245, 287, 345, 465, 483, 615, 651, 713, 735, 805, 861, 943, 1085, 1127, 1271, 1435, 1519, 2009, 2139, 2415, 2829, 3255, 3381, 3565, 3813, 4305, 4557, 4715, 4991, 5635, 6027, 6355, 6601, 7595, 8897, 10045, 10695, 14145, 14973, 16905, 19065, 19803, 22785, 24955, 26691, 29233, 30135, 33005, 34937, 44485, 46207, 62279, 74865, 87699, 99015, 104811, 133455, 138621, 146165, 174685, 186837, 204631, 231035, 311395, 438495, 524055, 613893, 693105, 934185, 1023155, 1432417, 3069465, 4297251, 7162085, 21486255]

約数ペア:

[(1, 21486255), (3, 7162085), (5, 4297251), (7, 3069465), (15, 1432417), (21, 1023155), (23, 934185), (31, 693105), (35, 613893), (41, 524055), (49, 438495), (69, 311395), (93, 231035), (105, 204631), (115, 186837), (123, 174685), (147, 146165), (155, 138621), (161, 133455), (205, 104811), (217, 99015), (245, 87699), (287, 74865), (345, 62279), (465, 46207), (483, 44485), (615, 34937), (651, 33005), (713, 30135), (735, 29233), (805, 26691), (861, 24955), (943, 22785), (1085, 19803), (1127, 19065), (1271, 16905), (1435, 14973), (1519, 14145), (2009, 10695), (2139, 10045), (2415, 8897), (2829, 7595), (3255, 6601), (3381, 6355), (3565, 6027), (3813, 5635), (4305, 4991), (4557, 4715)]