18577888

素因数分解:

$2^5\times 7^1\times {\mathrm{197}}^1\times {\mathrm{421}}^1$

素因数の和:635

約数の個数: 48

約数和(自身を含む): 42112224

約数和(自身を除く): 23534336

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 197, 224, 394, 421, 788, 842, 1379, 1576, 1684, 2758, 2947, 3152, 3368, 5516, 5894, 6304, 6736, 11032, 11788, 13472, 22064, 23576, 44128, 47152, 82937, 94304, 165874, 331748, 580559, 663496, 1161118, 1326992, 2322236, 2653984, 4644472, 9288944, 18577888]

約数ペア:

[(1, 18577888), (2, 9288944), (4, 4644472), (7, 2653984), (8, 2322236), (14, 1326992), (16, 1161118), (28, 663496), (32, 580559), (56, 331748), (112, 165874), (197, 94304), (224, 82937), (394, 47152), (421, 44128), (788, 23576), (842, 22064), (1379, 13472), (1576, 11788), (1684, 11032), (2758, 6736), (2947, 6304), (3152, 5894), (3368, 5516)]