305800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 781200

約数和(自身を除く): 475400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 139, 200, 220, 275, 278, 440, 550, 556, 695, 1100, 1112, 1390, 1529, 2200, 2780, 3058, 3475, 5560, 6116, 6950, 7645, 12232, 13900, 15290, 27800, 30580, 38225, 61160, 76450, 152900, 305800]

約数ペア:

[(1, 305800), (2, 152900), (4, 76450), (5, 61160), (8, 38225), (10, 30580), (11, 27800), (20, 15290), (22, 13900), (25, 12232), (40, 7645), (44, 6950), (50, 6116), (55, 5560), (88, 3475), (100, 3058), (110, 2780), (139, 2200), (200, 1529), (220, 1390), (275, 1112), (278, 1100), (440, 695), (550, 556)]