2789778860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{178603}}^1$

素因数の和:178694

約数の個数: 48

約数和(自身を含む): 6481181952

約数和(自身を除く): 3691403092

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 3124, 3905, 7810, 15620, 178603, 357206, 714412, 893015, 1786030, 1964633, 3572060, 3929266, 7858532, 9823165, 12680813, 19646330, 25361626, 39292660, 50723252, 63404065, 126808130, 139488943, 253616260, 278977886, 557955772, 697444715, 1394889430, 2789778860]

約数ペア:

[(1, 2789778860), (2, 1394889430), (4, 697444715), (5, 557955772), (10, 278977886), (11, 253616260), (20, 139488943), (22, 126808130), (44, 63404065), (55, 50723252), (71, 39292660), (110, 25361626), (142, 19646330), (220, 12680813), (284, 9823165), (355, 7858532), (710, 3929266), (781, 3572060), (1420, 1964633), (1562, 1786030), (3124, 893015), (3905, 714412), (7810, 357206), (15620, 178603)]