81971680

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{73189}}^1$

素因数の和:73211

約数の個数: 48

約数和(自身を含む): 221326560

約数和(自身を除く): 139354880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 73189, 146378, 292756, 365945, 512323, 585512, 731890, 1024646, 1171024, 1463780, 2049292, 2342048, 2561615, 2927560, 4098584, 5123230, 5855120, 8197168, 10246460, 11710240, 16394336, 20492920, 40985840, 81971680]

約数ペア:

[(1, 81971680), (2, 40985840), (4, 20492920), (5, 16394336), (7, 11710240), (8, 10246460), (10, 8197168), (14, 5855120), (16, 5123230), (20, 4098584), (28, 2927560), (32, 2561615), (35, 2342048), (40, 2049292), (56, 1463780), (70, 1171024), (80, 1024646), (112, 731890), (140, 585512), (160, 512323), (224, 365945), (280, 292756), (560, 146378), (1120, 73189)]