19773920

素因数分解:

$2^5\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1489}}^1$

素因数の和:1587

約数の個数: 48

約数和(自身を含む): 47310480

約数和(自身を除く): 27536560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 83, 160, 166, 332, 415, 664, 830, 1328, 1489, 1660, 2656, 2978, 3320, 5956, 6640, 7445, 11912, 13280, 14890, 23824, 29780, 47648, 59560, 119120, 123587, 238240, 247174, 494348, 617935, 988696, 1235870, 1977392, 2471740, 3954784, 4943480, 9886960, 19773920]

約数ペア:

[(1, 19773920), (2, 9886960), (4, 4943480), (5, 3954784), (8, 2471740), (10, 1977392), (16, 1235870), (20, 988696), (32, 617935), (40, 494348), (80, 247174), (83, 238240), (160, 123587), (166, 119120), (332, 59560), (415, 47648), (664, 29780), (830, 23824), (1328, 14890), (1489, 13280), (1660, 11912), (2656, 7445), (2978, 6640), (3320, 5956)]