647417020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{54959}}^1$

素因数の和:55018

約数の個数: 48

約数和(自身を含む): 1477324800

約数和(自身を除く): 829907780

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 2356, 2945, 5890, 11780, 54959, 109918, 219836, 274795, 549590, 1044221, 1099180, 1703729, 2088442, 3407458, 4176884, 5221105, 6814916, 8518645, 10442210, 17037290, 20884420, 32370851, 34074580, 64741702, 129483404, 161854255, 323708510, 647417020]

約数ペア:

[(1, 647417020), (2, 323708510), (4, 161854255), (5, 129483404), (10, 64741702), (19, 34074580), (20, 32370851), (31, 20884420), (38, 17037290), (62, 10442210), (76, 8518645), (95, 6814916), (124, 5221105), (155, 4176884), (190, 3407458), (310, 2088442), (380, 1703729), (589, 1099180), (620, 1044221), (1178, 549590), (2356, 274795), (2945, 219836), (5890, 109918), (11780, 54959)]