20493976

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4861}}^1$

素因数の和:4915

約数の個数: 32

約数和(自身を含む): 42007680

約数和(自身を除く): 21513704

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 248, 527, 1054, 2108, 4216, 4861, 9722, 19444, 38888, 82637, 150691, 165274, 301382, 330548, 602764, 661096, 1205528, 2561747, 5123494, 10246988, 20493976]

約数ペア:

[(1, 20493976), (2, 10246988), (4, 5123494), (8, 2561747), (17, 1205528), (31, 661096), (34, 602764), (62, 330548), (68, 301382), (124, 165274), (136, 150691), (248, 82637), (527, 38888), (1054, 19444), (2108, 9722), (4216, 4861)]