28765156

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 63345240

約数和(自身を除く): 34580084

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 49, 68, 89, 97, 98, 119, 178, 194, 196, 238, 356, 388, 476, 623, 679, 833, 1246, 1358, 1513, 1649, 1666, 2492, 2716, 3026, 3298, 3332, 4361, 4753, 6052, 6596, 8633, 8722, 9506, 10591, 11543, 17266, 17444, 19012, 21182, 23086, 34532, 42364, 46172, 60431, 74137, 80801, 120862, 146761, 148274, 161602, 241724, 293522, 296548, 323204, 423017, 587044, 846034, 1027327, 1692068, 2054654, 4109308, 7191289, 14382578, 28765156]

約数ペア:

[(1, 28765156), (2, 14382578), (4, 7191289), (7, 4109308), (14, 2054654), (17, 1692068), (28, 1027327), (34, 846034), (49, 587044), (68, 423017), (89, 323204), (97, 296548), (98, 293522), (119, 241724), (178, 161602), (194, 148274), (196, 146761), (238, 120862), (356, 80801), (388, 74137), (476, 60431), (623, 46172), (679, 42364), (833, 34532), (1246, 23086), (1358, 21182), (1513, 19012), (1649, 17444), (1666, 17266), (2492, 11543), (2716, 10591), (3026, 9506), (3298, 8722), (3332, 8633), (4361, 6596), (4753, 6052)]