21553896

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:239

約数の個数: 128

約数和(自身を含む): 67737600

約数和(自身を除く): 46183704

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 71, 78, 84, 91, 104, 139, 142, 156, 168, 182, 213, 273, 278, 284, 312, 364, 417, 426, 497, 546, 556, 568, 728, 834, 852, 923, 973, 994, 1092, 1112, 1491, 1668, 1704, 1807, 1846, 1946, 1988, 2184, 2769, 2919, 2982, 3336, 3614, 3692, 3892, 3976, 5421, 5538, 5838, 5964, 6461, 7228, 7384, 7784, 9869, 10842, 11076, 11676, 11928, 12649, 12922, 14456, 19383, 19738, 21684, 22152, 23352, 25298, 25844, 29607, 37947, 38766, 39476, 43368, 50596, 51688, 59214, 69083, 75894, 77532, 78952, 101192, 118428, 128297, 138166, 151788, 155064, 207249, 236856, 256594, 276332, 303576, 384891, 414498, 513188, 552664, 769782, 828996, 898079, 1026376, 1539564, 1657992, 1796158, 2694237, 3079128, 3592316, 5388474, 7184632, 10776948, 21553896]

約数ペア:

[(1, 21553896), (2, 10776948), (3, 7184632), (4, 5388474), (6, 3592316), (7, 3079128), (8, 2694237), (12, 1796158), (13, 1657992), (14, 1539564), (21, 1026376), (24, 898079), (26, 828996), (28, 769782), (39, 552664), (42, 513188), (52, 414498), (56, 384891), (71, 303576), (78, 276332), (84, 256594), (91, 236856), (104, 207249), (139, 155064), (142, 151788), (156, 138166), (168, 128297), (182, 118428), (213, 101192), (273, 78952), (278, 77532), (284, 75894), (312, 69083), (364, 59214), (417, 51688), (426, 50596), (497, 43368), (546, 39476), (556, 38766), (568, 37947), (728, 29607), (834, 25844), (852, 25298), (923, 23352), (973, 22152), (994, 21684), (1092, 19738), (1112, 19383), (1491, 14456), (1668, 12922), (1704, 12649), (1807, 11928), (1846, 11676), (1946, 11076), (1988, 10842), (2184, 9869), (2769, 7784), (2919, 7384), (2982, 7228), (3336, 6461), (3614, 5964), (3692, 5838), (3892, 5538), (3976, 5421)]