19726912

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:267

約数の個数: 56

約数和(自身を含む): 41322752

約数和(自身を除く): 21595840

約数列:

[1, 2, 4, 8, 16, 31, 32, 61, 62, 64, 122, 124, 163, 244, 248, 326, 488, 496, 652, 976, 992, 1304, 1891, 1952, 1984, 2608, 3782, 3904, 5053, 5216, 7564, 9943, 10106, 10432, 15128, 19886, 20212, 30256, 39772, 40424, 60512, 79544, 80848, 121024, 159088, 161696, 308233, 318176, 323392, 616466, 636352, 1232932, 2465864, 4931728, 9863456, 19726912]

約数ペア:

[(1, 19726912), (2, 9863456), (4, 4931728), (8, 2465864), (16, 1232932), (31, 636352), (32, 616466), (61, 323392), (62, 318176), (64, 308233), (122, 161696), (124, 159088), (163, 121024), (244, 80848), (248, 79544), (326, 60512), (488, 40424), (496, 39772), (652, 30256), (976, 20212), (992, 19886), (1304, 15128), (1891, 10432), (1952, 10106), (1984, 9943), (2608, 7564), (3782, 5216), (3904, 5053)]