1999205955

素因数分解:

$3^6\times 5^1\times {\mathrm{643}}^1\times {\mathrm{853}}^1$

素因数の和:1519

約数の個数: 56

約数和(自身を含む): 3606742608

約数和(自身を除く): 1607536653

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 643, 729, 853, 1215, 1929, 2559, 3215, 3645, 4265, 5787, 7677, 9645, 12795, 17361, 23031, 28935, 38385, 52083, 69093, 86805, 115155, 156249, 207279, 260415, 345465, 468747, 548479, 621837, 781245, 1036395, 1645437, 2343735, 2742395, 3109185, 4936311, 8227185, 14808933, 24681555, 44426799, 74044665, 133280397, 222133995, 399841191, 666401985, 1999205955]

約数ペア:

[(1, 1999205955), (3, 666401985), (5, 399841191), (9, 222133995), (15, 133280397), (27, 74044665), (45, 44426799), (81, 24681555), (135, 14808933), (243, 8227185), (405, 4936311), (643, 3109185), (729, 2742395), (853, 2343735), (1215, 1645437), (1929, 1036395), (2559, 781245), (3215, 621837), (3645, 548479), (4265, 468747), (5787, 345465), (7677, 260415), (9645, 207279), (12795, 156249), (17361, 115155), (23031, 86805), (28935, 69093), (38385, 52083)]