19790340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{499}}^1\times {\mathrm{661}}^1$

素因数の和:1172

約数の個数: 48

約数和(自身を含む): 55608000

約数和(自身を除く): 35817660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 499, 661, 998, 1322, 1497, 1983, 1996, 2495, 2644, 2994, 3305, 3966, 4990, 5988, 6610, 7485, 7932, 9915, 9980, 13220, 14970, 19830, 29940, 39660, 329839, 659678, 989517, 1319356, 1649195, 1979034, 3298390, 3958068, 4947585, 6596780, 9895170, 19790340]

約数ペア:

[(1, 19790340), (2, 9895170), (3, 6596780), (4, 4947585), (5, 3958068), (6, 3298390), (10, 1979034), (12, 1649195), (15, 1319356), (20, 989517), (30, 659678), (60, 329839), (499, 39660), (661, 29940), (998, 19830), (1322, 14970), (1497, 13220), (1983, 9980), (1996, 9915), (2495, 7932), (2644, 7485), (2994, 6610), (3305, 5988), (3966, 4990)]