21387912

素因数分解:

$2^3\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1399}}^1$

素因数の和:1435

約数の個数: 96

約数和(自身を含む): 67032000

約数和(自身を除く): 45644088

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 49, 52, 56, 78, 84, 91, 98, 104, 147, 156, 168, 182, 196, 273, 294, 312, 364, 392, 546, 588, 637, 728, 1092, 1176, 1274, 1399, 1911, 2184, 2548, 2798, 3822, 4197, 5096, 5596, 7644, 8394, 9793, 11192, 15288, 16788, 18187, 19586, 29379, 33576, 36374, 39172, 54561, 58758, 68551, 72748, 78344, 109122, 117516, 127309, 137102, 145496, 205653, 218244, 235032, 254618, 274204, 381927, 411306, 436488, 509236, 548408, 763854, 822612, 891163, 1018472, 1527708, 1645224, 1782326, 2673489, 3055416, 3564652, 5346978, 7129304, 10693956, 21387912]

約数ペア:

[(1, 21387912), (2, 10693956), (3, 7129304), (4, 5346978), (6, 3564652), (7, 3055416), (8, 2673489), (12, 1782326), (13, 1645224), (14, 1527708), (21, 1018472), (24, 891163), (26, 822612), (28, 763854), (39, 548408), (42, 509236), (49, 436488), (52, 411306), (56, 381927), (78, 274204), (84, 254618), (91, 235032), (98, 218244), (104, 205653), (147, 145496), (156, 137102), (168, 127309), (182, 117516), (196, 109122), (273, 78344), (294, 72748), (312, 68551), (364, 58758), (392, 54561), (546, 39172), (588, 36374), (637, 33576), (728, 29379), (1092, 19586), (1176, 18187), (1274, 16788), (1399, 15288), (1911, 11192), (2184, 9793), (2548, 8394), (2798, 7644), (3822, 5596), (4197, 5096)]