21379995

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1$

素因数の和:281

約数の個数: 96

約数和(自身を含む): 47803392

約数和(自身を除く): 26423397

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 23, 35, 39, 45, 63, 65, 69, 91, 105, 115, 117, 161, 195, 207, 227, 273, 299, 315, 345, 455, 483, 585, 681, 805, 819, 897, 1035, 1135, 1365, 1449, 1495, 1589, 2043, 2093, 2415, 2691, 2951, 3405, 4095, 4485, 4767, 5221, 6279, 7245, 7945, 8853, 10215, 10465, 13455, 14301, 14755, 15663, 18837, 20657, 23835, 26105, 26559, 31395, 36547, 44265, 46989, 61971, 67873, 71505, 78315, 94185, 103285, 109641, 132795, 182735, 185913, 203619, 234945, 309855, 328923, 339365, 475111, 548205, 610857, 929565, 1018095, 1425333, 1644615, 2375555, 3054285, 4275999, 7126665, 21379995]

約数ペア:

[(1, 21379995), (3, 7126665), (5, 4275999), (7, 3054285), (9, 2375555), (13, 1644615), (15, 1425333), (21, 1018095), (23, 929565), (35, 610857), (39, 548205), (45, 475111), (63, 339365), (65, 328923), (69, 309855), (91, 234945), (105, 203619), (115, 185913), (117, 182735), (161, 132795), (195, 109641), (207, 103285), (227, 94185), (273, 78315), (299, 71505), (315, 67873), (345, 61971), (455, 46989), (483, 44265), (585, 36547), (681, 31395), (805, 26559), (819, 26105), (897, 23835), (1035, 20657), (1135, 18837), (1365, 15663), (1449, 14755), (1495, 14301), (1589, 13455), (2043, 10465), (2093, 10215), (2415, 8853), (2691, 7945), (2951, 7245), (3405, 6279), (4095, 5221), (4485, 4767)]