21499595

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 29538432

約数和(自身を除く): 8038837

約数列:

[1, 5, 13, 23, 65, 73, 115, 197, 299, 365, 949, 985, 1495, 1679, 2561, 4531, 4745, 8395, 12805, 14381, 21827, 22655, 58903, 71905, 109135, 186953, 294515, 330763, 934765, 1653815, 4299919, 21499595]

約数ペア:

[(1, 21499595), (5, 4299919), (13, 1653815), (23, 934765), (65, 330763), (73, 294515), (115, 186953), (197, 109135), (299, 71905), (365, 58903), (949, 22655), (985, 21827), (1495, 14381), (1679, 12805), (2561, 8395), (4531, 4745)]