21000950385

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{412147}}^1$

素因数の和:412277

約数の個数: 32

約数和(自身を含む): 34818263040

約数和(自身を除く): 13817312655

約数列:

[1, 3, 5, 15, 43, 79, 129, 215, 237, 395, 645, 1185, 3397, 10191, 16985, 50955, 412147, 1236441, 2060735, 6182205, 17722321, 32559613, 53166963, 88611605, 97678839, 162798065, 265834815, 488394195, 1400063359, 4200190077, 7000316795, 21000950385]

約数ペア:

[(1, 21000950385), (3, 7000316795), (5, 4200190077), (15, 1400063359), (43, 488394195), (79, 265834815), (129, 162798065), (215, 97678839), (237, 88611605), (395, 53166963), (645, 32559613), (1185, 17722321), (3397, 6182205), (10191, 2060735), (16985, 1236441), (50955, 412147)]