11979640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{9661}}^1$

素因数の和:9703

約数の個数: 32

約数和(自身を含む): 27826560

約数和(自身を除く): 15846920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 9661, 19322, 38644, 48305, 77288, 96610, 193220, 299491, 386440, 598982, 1197964, 1497455, 2395928, 2994910, 5989820, 11979640]

約数ペア:

[(1, 11979640), (2, 5989820), (4, 2994910), (5, 2395928), (8, 1497455), (10, 1197964), (20, 598982), (31, 386440), (40, 299491), (62, 193220), (124, 96610), (155, 77288), (248, 48305), (310, 38644), (620, 19322), (1240, 9661)]