77796520

素因数分解:

$2^3\times 5^1\times {\mathrm{971}}^1\times {\mathrm{2003}}^1$

素因数の和:2985

約数の個数: 32

約数和(自身を含む): 175309920

約数和(自身を除く): 97513400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 971, 1942, 2003, 3884, 4006, 4855, 7768, 8012, 9710, 10015, 16024, 19420, 20030, 38840, 40060, 80120, 1944913, 3889826, 7779652, 9724565, 15559304, 19449130, 38898260, 77796520]

約数ペア:

[(1, 77796520), (2, 38898260), (4, 19449130), (5, 15559304), (8, 9724565), (10, 7779652), (20, 3889826), (40, 1944913), (971, 80120), (1942, 40060), (2003, 38840), (3884, 20030), (4006, 19420), (4855, 16024), (7768, 10015), (8012, 9710)]