18505984

素因数分解:

$2^8\times 7^1\times {\mathrm{23}}^1\times {\mathrm{449}}^1$

素因数の和:495

約数の個数: 72

約数和(自身を含む): 44150400

約数和(自身を除く): 25644416

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 128, 161, 184, 224, 256, 322, 368, 448, 449, 644, 736, 896, 898, 1288, 1472, 1792, 1796, 2576, 2944, 3143, 3592, 5152, 5888, 6286, 7184, 10304, 10327, 12572, 14368, 20608, 20654, 25144, 28736, 41216, 41308, 50288, 57472, 72289, 82616, 100576, 114944, 144578, 165232, 201152, 289156, 330464, 402304, 578312, 660928, 804608, 1156624, 1321856, 2313248, 2643712, 4626496, 9252992, 18505984]

約数ペア:

[(1, 18505984), (2, 9252992), (4, 4626496), (7, 2643712), (8, 2313248), (14, 1321856), (16, 1156624), (23, 804608), (28, 660928), (32, 578312), (46, 402304), (56, 330464), (64, 289156), (92, 201152), (112, 165232), (128, 144578), (161, 114944), (184, 100576), (224, 82616), (256, 72289), (322, 57472), (368, 50288), (448, 41308), (449, 41216), (644, 28736), (736, 25144), (896, 20654), (898, 20608), (1288, 14368), (1472, 12572), (1792, 10327), (1796, 10304), (2576, 7184), (2944, 6286), (3143, 5888), (3592, 5152)]