20559560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{727}}^1$

素因数の和:846

約数の個数: 64

約数和(自身を含む): 53464320

約数和(自身を除く): 32904760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 101, 140, 202, 280, 404, 505, 707, 727, 808, 1010, 1414, 1454, 2020, 2828, 2908, 3535, 3635, 4040, 5089, 5656, 5816, 7070, 7270, 10178, 14140, 14540, 20356, 25445, 28280, 29080, 40712, 50890, 73427, 101780, 146854, 203560, 293708, 367135, 513989, 587416, 734270, 1027978, 1468540, 2055956, 2569945, 2937080, 4111912, 5139890, 10279780, 20559560]

約数ペア:

[(1, 20559560), (2, 10279780), (4, 5139890), (5, 4111912), (7, 2937080), (8, 2569945), (10, 2055956), (14, 1468540), (20, 1027978), (28, 734270), (35, 587416), (40, 513989), (56, 367135), (70, 293708), (101, 203560), (140, 146854), (202, 101780), (280, 73427), (404, 50890), (505, 40712), (707, 29080), (727, 28280), (808, 25445), (1010, 20356), (1414, 14540), (1454, 14140), (2020, 10178), (2828, 7270), (2908, 7070), (3535, 5816), (3635, 5656), (4040, 5089)]