1388132360

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{488779}}^1$

素因数の和:488861

約数の個数: 32

約数和(自身を含む): 3167294400

約数和(自身を除く): 1779162040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 488779, 977558, 1955116, 2443895, 3910232, 4887790, 9775580, 19551160, 34703309, 69406618, 138813236, 173516545, 277626472, 347033090, 694066180, 1388132360]

約数ペア:

[(1, 1388132360), (2, 694066180), (4, 347033090), (5, 277626472), (8, 173516545), (10, 138813236), (20, 69406618), (40, 34703309), (71, 19551160), (142, 9775580), (284, 4887790), (355, 3910232), (568, 2443895), (710, 1955116), (1420, 977558), (2840, 488779)]