21428208

素因数分解:

$2^4\times 3^2\times {\mathrm{67}}^1\times {\mathrm{2221}}^1$

素因数の和:2302

約数の個数: 60

約数和(自身を含む): 60891688

約数和(自身を除く): 39463480

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 67, 72, 134, 144, 201, 268, 402, 536, 603, 804, 1072, 1206, 1608, 2221, 2412, 3216, 4442, 4824, 6663, 8884, 9648, 13326, 17768, 19989, 26652, 35536, 39978, 53304, 79956, 106608, 148807, 159912, 297614, 319824, 446421, 595228, 892842, 1190456, 1339263, 1785684, 2380912, 2678526, 3571368, 5357052, 7142736, 10714104, 21428208]

約数ペア:

[(1, 21428208), (2, 10714104), (3, 7142736), (4, 5357052), (6, 3571368), (8, 2678526), (9, 2380912), (12, 1785684), (16, 1339263), (18, 1190456), (24, 892842), (36, 595228), (48, 446421), (67, 319824), (72, 297614), (134, 159912), (144, 148807), (201, 106608), (268, 79956), (402, 53304), (536, 39978), (603, 35536), (804, 26652), (1072, 19989), (1206, 17768), (1608, 13326), (2221, 9648), (2412, 8884), (3216, 6663), (4442, 4824)]