21271518

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:270

約数の個数: 64

約数和(自身を含む): 49674240

約数和(自身を除く): 28402722

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 93, 97, 131, 186, 194, 262, 279, 291, 393, 558, 582, 786, 837, 873, 1179, 1674, 1746, 2358, 2619, 3007, 3537, 4061, 5238, 6014, 7074, 8122, 9021, 12183, 12707, 18042, 24366, 25414, 27063, 36549, 38121, 54126, 73098, 76242, 81189, 109647, 114363, 162378, 219294, 228726, 343089, 393917, 686178, 787834, 1181751, 2363502, 3545253, 7090506, 10635759, 21271518]

約数ペア:

[(1, 21271518), (2, 10635759), (3, 7090506), (6, 3545253), (9, 2363502), (18, 1181751), (27, 787834), (31, 686178), (54, 393917), (62, 343089), (93, 228726), (97, 219294), (131, 162378), (186, 114363), (194, 109647), (262, 81189), (279, 76242), (291, 73098), (393, 54126), (558, 38121), (582, 36549), (786, 27063), (837, 25414), (873, 24366), (1179, 18042), (1674, 12707), (1746, 12183), (2358, 9021), (2619, 8122), (3007, 7074), (3537, 6014), (4061, 5238)]