21731765

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 29877120

約数和(自身を除く): 8145355

約数列:

[1, 5, 11, 37, 55, 59, 181, 185, 295, 407, 649, 905, 1991, 2035, 2183, 3245, 6697, 9955, 10679, 10915, 24013, 33485, 53395, 73667, 117469, 120065, 368335, 395123, 587345, 1975615, 4346353, 21731765]

約数ペア:

[(1, 21731765), (5, 4346353), (11, 1975615), (37, 587345), (55, 395123), (59, 368335), (181, 120065), (185, 117469), (295, 73667), (407, 53395), (649, 33485), (905, 24013), (1991, 10915), (2035, 10679), (2183, 9955), (3245, 6697)]