428120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 1209600

約数和(自身を除く): 781480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 139, 140, 154, 220, 278, 280, 308, 385, 440, 556, 616, 695, 770, 973, 1112, 1390, 1529, 1540, 1946, 2780, 3058, 3080, 3892, 4865, 5560, 6116, 7645, 7784, 9730, 10703, 12232, 15290, 19460, 21406, 30580, 38920, 42812, 53515, 61160, 85624, 107030, 214060, 428120]

約数ペア:

[(1, 428120), (2, 214060), (4, 107030), (5, 85624), (7, 61160), (8, 53515), (10, 42812), (11, 38920), (14, 30580), (20, 21406), (22, 19460), (28, 15290), (35, 12232), (40, 10703), (44, 9730), (55, 7784), (56, 7645), (70, 6116), (77, 5560), (88, 4865), (110, 3892), (139, 3080), (140, 3058), (154, 2780), (220, 1946), (278, 1540), (280, 1529), (308, 1390), (385, 1112), (440, 973), (556, 770), (616, 695)]