12940460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{701}}^1$

素因数の和:794

約数の個数: 48

約数和(自身を含む): 29719872

約数和(自身を除く): 16779412

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 701, 710, 923, 1402, 1420, 1846, 2804, 3505, 3692, 4615, 7010, 9113, 9230, 14020, 18226, 18460, 36452, 45565, 49771, 91130, 99542, 182260, 199084, 248855, 497710, 647023, 995420, 1294046, 2588092, 3235115, 6470230, 12940460]

約数ペア:

[(1, 12940460), (2, 6470230), (4, 3235115), (5, 2588092), (10, 1294046), (13, 995420), (20, 647023), (26, 497710), (52, 248855), (65, 199084), (71, 182260), (130, 99542), (142, 91130), (260, 49771), (284, 45565), (355, 36452), (701, 18460), (710, 18226), (923, 14020), (1402, 9230), (1420, 9113), (1846, 7010), (2804, 4615), (3505, 3692)]