131405931

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 205920000

約数和(自身を除く): 74514069

約数列:

[1, 3, 9, 29, 31, 87, 93, 109, 149, 261, 279, 327, 447, 899, 981, 1341, 2697, 3161, 3379, 4321, 4619, 8091, 9483, 10137, 12963, 13857, 16241, 28449, 30411, 38889, 41571, 48723, 97991, 133951, 146169, 293973, 401853, 470989, 503471, 881919, 1205559, 1412967, 1510413, 4238901, 4531239, 14600659, 43801977, 131405931]

約数ペア:

[(1, 131405931), (3, 43801977), (9, 14600659), (29, 4531239), (31, 4238901), (87, 1510413), (93, 1412967), (109, 1205559), (149, 881919), (261, 503471), (279, 470989), (327, 401853), (447, 293973), (899, 146169), (981, 133951), (1341, 97991), (2697, 48723), (3161, 41571), (3379, 38889), (4321, 30411), (4619, 28449), (8091, 16241), (9483, 13857), (10137, 12963)]