20863395

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{619}}^1$

素因数の和:744

約数の個数: 48

約数和(自身を含む): 41783040

約数和(自身を除く): 20919645

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 107, 315, 321, 535, 619, 749, 963, 1605, 1857, 2247, 3095, 3745, 4333, 4815, 5571, 6741, 9285, 11235, 12999, 21665, 27855, 33705, 38997, 64995, 66233, 194985, 198699, 331165, 463631, 596097, 993495, 1390893, 2318155, 2980485, 4172679, 6954465, 20863395]

約数ペア:

[(1, 20863395), (3, 6954465), (5, 4172679), (7, 2980485), (9, 2318155), (15, 1390893), (21, 993495), (35, 596097), (45, 463631), (63, 331165), (105, 198699), (107, 194985), (315, 66233), (321, 64995), (535, 38997), (619, 33705), (749, 27855), (963, 21665), (1605, 12999), (1857, 11235), (2247, 9285), (3095, 6741), (3745, 5571), (4333, 4815)]