1388405960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{846589}}^1$

素因数の和:846641

約数の個数: 32

約数和(自身を含む): 3200110200

約数和(自身を除く): 1811704240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 846589, 1693178, 3386356, 4232945, 6772712, 8465890, 16931780, 33863560, 34710149, 69420298, 138840596, 173550745, 277681192, 347101490, 694202980, 1388405960]

約数ペア:

[(1, 1388405960), (2, 694202980), (4, 347101490), (5, 277681192), (8, 173550745), (10, 138840596), (20, 69420298), (40, 34710149), (41, 33863560), (82, 16931780), (164, 8465890), (205, 6772712), (328, 4232945), (410, 3386356), (820, 1693178), (1640, 846589)]