20657202640

素因数分解:

$2^4\times 5^1\times {\mathrm{271}}^1\times {\mathrm{952823}}^1$

素因数の和:953107

約数の個数: 40

約数和(自身を含む): 48205271808

約数和(自身を除く): 27548069168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271, 542, 1084, 1355, 2168, 2710, 4336, 5420, 10840, 21680, 952823, 1905646, 3811292, 4764115, 7622584, 9528230, 15245168, 19056460, 38112920, 76225840, 258215033, 516430066, 1032860132, 1291075165, 2065720264, 2582150330, 4131440528, 5164300660, 10328601320, 20657202640]

約数ペア:

[(1, 20657202640), (2, 10328601320), (4, 5164300660), (5, 4131440528), (8, 2582150330), (10, 2065720264), (16, 1291075165), (20, 1032860132), (40, 516430066), (80, 258215033), (271, 76225840), (542, 38112920), (1084, 19056460), (1355, 15245168), (2168, 9528230), (2710, 7622584), (4336, 4764115), (5420, 3811292), (10840, 1905646), (21680, 952823)]