19998239715

素因数分解:

$3^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{233}}^1\times {\mathrm{2851}}^1$

素因数の和:3321

約数の個数: 64

約数和(自身を含む): 35877703680

約数和(自身を除く): 15879463965

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 223, 233, 669, 699, 1115, 1165, 2007, 2097, 2851, 3345, 3495, 6021, 6291, 8553, 10035, 10485, 14255, 25659, 30105, 31455, 42765, 51959, 76977, 128295, 155877, 259795, 384885, 467631, 635773, 664283, 779385, 1402893, 1907319, 1992849, 2338155, 3178865, 3321415, 5721957, 5978547, 7014465, 9536595, 9964245, 17165871, 17935641, 28609785, 29892735, 85829355, 89678205, 148135109, 444405327, 740675545, 1333215981, 2222026635, 3999647943, 6666079905, 19998239715]

約数ペア:

[(1, 19998239715), (3, 6666079905), (5, 3999647943), (9, 2222026635), (15, 1333215981), (27, 740675545), (45, 444405327), (135, 148135109), (223, 89678205), (233, 85829355), (669, 29892735), (699, 28609785), (1115, 17935641), (1165, 17165871), (2007, 9964245), (2097, 9536595), (2851, 7014465), (3345, 5978547), (3495, 5721957), (6021, 3321415), (6291, 3178865), (8553, 2338155), (10035, 1992849), (10485, 1907319), (14255, 1402893), (25659, 779385), (30105, 664283), (31455, 635773), (42765, 467631), (51959, 384885), (76977, 259795), (128295, 155877)]