19871320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{70969}}^1$

素因数の和:70987

約数の個数: 32

約数和(自身を含む): 51098400

約数和(自身を除く): 31227080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 70969, 141938, 283876, 354845, 496783, 567752, 709690, 993566, 1419380, 1987132, 2483915, 2838760, 3974264, 4967830, 9935660, 19871320]

約数ペア:

[(1, 19871320), (2, 9935660), (4, 4967830), (5, 3974264), (7, 2838760), (8, 2483915), (10, 1987132), (14, 1419380), (20, 993566), (28, 709690), (35, 567752), (40, 496783), (56, 354845), (70, 283876), (140, 141938), (280, 70969)]