19411456

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{1223}}^1$

素因数の和:1272

約数の個数: 40

約数和(自身を含む): 40068864

約数和(自身を除く): 20657408

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1223, 1984, 2446, 3968, 4892, 7936, 9784, 15872, 19568, 37913, 39136, 75826, 78272, 151652, 156544, 303304, 313088, 606608, 626176, 1213216, 2426432, 4852864, 9705728, 19411456]

約数ペア:

[(1, 19411456), (2, 9705728), (4, 4852864), (8, 2426432), (16, 1213216), (31, 626176), (32, 606608), (62, 313088), (64, 303304), (124, 156544), (128, 151652), (248, 78272), (256, 75826), (496, 39136), (512, 37913), (992, 19568), (1223, 15872), (1984, 9784), (2446, 7936), (3968, 4892)]