131221152

素因数分解:

$2^5\times 3^2\times {\mathrm{457}}^1\times {\mathrm{997}}^1$

素因数の和:1470

約数の個数: 72

約数和(自身を含む): 374351796

約数和(自身を除く): 243130644

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 288, 457, 914, 997, 1371, 1828, 1994, 2742, 2991, 3656, 3988, 4113, 5484, 5982, 7312, 7976, 8226, 8973, 10968, 11964, 14624, 15952, 16452, 17946, 21936, 23928, 31904, 32904, 35892, 43872, 47856, 65808, 71784, 95712, 131616, 143568, 287136, 455629, 911258, 1366887, 1822516, 2733774, 3645032, 4100661, 5467548, 7290064, 8201322, 10935096, 14580128, 16402644, 21870192, 32805288, 43740384, 65610576, 131221152]

約数ペア:

[(1, 131221152), (2, 65610576), (3, 43740384), (4, 32805288), (6, 21870192), (8, 16402644), (9, 14580128), (12, 10935096), (16, 8201322), (18, 7290064), (24, 5467548), (32, 4100661), (36, 3645032), (48, 2733774), (72, 1822516), (96, 1366887), (144, 911258), (288, 455629), (457, 287136), (914, 143568), (997, 131616), (1371, 95712), (1828, 71784), (1994, 65808), (2742, 47856), (2991, 43872), (3656, 35892), (3988, 32904), (4113, 31904), (5484, 23928), (5982, 21936), (7312, 17946), (7976, 16452), (8226, 15952), (8973, 14624), (10968, 11964)]