1291361980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{178859}}^1$

素因数の和:178906

約数の個数: 36

約数和(自身を含む): 2862117720

約数和(自身を除く): 1570755740

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 178859, 357718, 715436, 894295, 1788590, 3398321, 3577180, 6796642, 13593284, 16991605, 33983210, 64568099, 67966420, 129136198, 258272396, 322840495, 645680990, 1291361980]

約数ペア:

[(1, 1291361980), (2, 645680990), (4, 322840495), (5, 258272396), (10, 129136198), (19, 67966420), (20, 64568099), (38, 33983210), (76, 16991605), (95, 13593284), (190, 6796642), (361, 3577180), (380, 3398321), (722, 1788590), (1444, 894295), (1805, 715436), (3610, 357718), (7220, 178859)]